100115231 has 2 divisors, whose sum is σ = 100115232. Its totient is φ = 100115230.

The previous prime is 100115209. The next prime is 100115233. The reversal of 100115231 is 132511001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100115231 - 2²² = 95920927 is a prime.

It is a super-2 number, since 2×100115231² = 20046118956366722, which contains 22 as substring.

Together with 100115233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100115233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50057615 + 50057616.

It is an arithmetic number, because the mean of its divisors is an integer number (50057616).

Almost surely, 2^100115231 is an apocalyptic number.

100115231 is a deficient number, since it is larger than the sum of its proper divisors (1).

100115231 is an equidigital number, since it uses as much as digits as its factorization.

100115231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30, while the sum is 14.

The square root of 100115231 is about 10005.7598911827. The cubic root of 100115231 is about 464.3370998995.

Adding to 100115231 its reverse (132511001), we get a palindrome (232626232).

The spelling of 100115231 in words is "one hundred million, one hundred fifteen thousand, two hundred thirty-one".