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10111032431 = 51047198073
BaseRepresentation
bin10010110101010101…
…00001110001101111
3222002122200122222122
421122222201301233
5131201411014211
64351150303155
7505363233443
oct113252416157
928078618878
1010111032431
114319461355
121b621b7abb
13c519c4736
146bcbc6823
153e29e16db
hex25aaa1c6f

10111032431 has 4 divisors (see below), whose sum is σ = 10111281552. Its totient is φ = 10110783312.

The previous prime is 10111032367. The next prime is 10111032433. The reversal of 10111032431 is 13423011101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13423011101 = 22958615769.

It is a cyclic number.

It is not a de Polignac number, because 10111032431 - 26 = 10111032367 is a prime.

It is a super-2 number, since 2×101110324312 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111032433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47990 + ... + 150083.

It is an arithmetic number, because the mean of its divisors is an integer number (2527820388).

Almost surely, 210111032431 is an apocalyptic number.

10111032431 is a deficient number, since it is larger than the sum of its proper divisors (249121).

10111032431 is an equidigital number, since it uses as much as digits as its factorization.

10111032431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249120.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 10111032431 its reverse (13423011101), we get a palindrome (23534043532).

The spelling of 10111032431 in words is "ten billion, one hundred eleven million, thirty-two thousand, four hundred thirty-one".

Divisors: 1 51047 198073 10111032431