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103231001231 = 307336257333
BaseRepresentation
bin110000000100100001…
…1000001001010001111
3100212110100100012200222
41200021003001022033
53142404114014411
6115231302341555
710313106014111
oct1401103011217
9325410305628
10103231001231
113a864233156
121800ba2a8bb
139972013ba7
144dd41d93b1
152a42c0d4db
hex18090c128f

103231001231 has 4 divisors (see below), whose sum is σ = 103567258872. Its totient is φ = 102894743592.

The previous prime is 103231001201. The next prime is 103231001243. The reversal of 103231001231 is 132100132301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132100132301 = 967136608203.

It is a cyclic number.

It is not a de Polignac number, because 103231001231 - 234 = 86051132047 is a prime.

It is a super-2 number, since 2×1032310012312 (a number of 23 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 (103231001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 168128360 + ... + 168128973.

It is an arithmetic number, because the mean of its divisors is an integer number (25891814718).

Almost surely, 2103231001231 is an apocalyptic number.

103231001231 is a deficient number, since it is larger than the sum of its proper divisors (336257641).

103231001231 is an equidigital number, since it uses as much as digits as its factorization.

103231001231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336257640.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 103231001231 its reverse (132100132301), we get a palindrome (235331133532).

The spelling of 103231001231 in words is "one hundred three billion, two hundred thirty-one million, one thousand, two hundred thirty-one".

Divisors: 1 307 336257333 103231001231