231301031 has 16 divisors (see below), whose sum is σ = 267478848. Its totient is φ = 198105600.

The previous prime is 231301027. The next prime is 231301123. The reversal of 231301031 is 130103132.

It is a cyclic number.

It is not a de Polignac number, because 231301031 - 2² = 231301027 is a prime.

It is a super-2 number, since 2×231301031² = 107000333883325922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231300997 and 231301015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231301001) 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, 8321 + ... + 23061.

It is an arithmetic number, because the mean of its divisors is an integer number (16717428).

Almost surely, 2^231301031 is an apocalyptic number.

231301031 is a deficient number, since it is larger than the sum of its proper divisors (36177817).

231301031 is a wasteful number, since it uses less digits than its factorization.

231301031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14842.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 231301031 is about 15208.5841221331. The cubic root of 231301031 is about 613.8456598351.

Adding to 231301031 its reverse (130103132), we get a palindrome (361404163).

The spelling of 231301031 in words is "two hundred thirty-one million, three hundred one thousand, thirty-one".