100000156231 has 16 divisors (see below), whose sum is σ = 100959768000. Its totient is φ = 99046022400.

The previous prime is 100000156213. The next prime is 100000156237. The reversal of 100000156231 is 132651000001.

It is a cyclic number.

It is not a de Polignac number, because 100000156231 - 2⁵ = 100000156199 is a prime.

It is a super-2 number, since 2×100000156231² (a number of 23 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 = 100000156199 and 100000156208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100000156237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61689601 + ... + 61691221.

It is an arithmetic number, because the mean of its divisors is an integer number (6309985500).

Almost surely, 2^100000156231 is an apocalyptic number.

100000156231 is a deficient number, since it is larger than the sum of its proper divisors (959611769).

100000156231 is a wasteful number, since it uses less digits than its factorization.

100000156231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2970.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 100000156231 its reverse (132651000001), we get a palindrome (232651156232).

The spelling of 100000156231 in words is "one hundred billion, one hundred fifty-six thousand, two hundred thirty-one".