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10103231431 = 30193346549
BaseRepresentation
bin10010110100011001…
…10001001111000111
3222002010000100000201
421122030301033013
5131142411401211
64350311151331
7505240023136
oct113214611707
928063010021
1010103231431
114315013347
121b5b675547
13c501c2a67
146bbb5591d
153e1ea00c1
hex25a3313c7

10103231431 has 4 divisors (see below), whose sum is σ = 10106581000. Its totient is φ = 10099881864.

The previous prime is 10103231417. The next prime is 10103231441. The reversal of 10103231431 is 13413230101.

10103231431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13413230101 = 19705959479.

It is a cyclic number.

It is not a de Polignac number, because 10103231431 - 215 = 10103198663 is a prime.

It is a super-2 number, since 2×101032314312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10103231399 and 10103231408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10103231401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1670256 + ... + 1676293.

It is an arithmetic number, because the mean of its divisors is an integer number (2526645250).

Almost surely, 210103231431 is an apocalyptic number.

10103231431 is a deficient number, since it is larger than the sum of its proper divisors (3349569).

10103231431 is an equidigital number, since it uses as much as digits as its factorization.

10103231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349568.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 10103231431 its reverse (13413230101), we get a palindrome (23516461532).

The spelling of 10103231431 in words is "ten billion, one hundred three million, two hundred thirty-one thousand, four hundred thirty-one".

Divisors: 1 3019 3346549 10103231431