231025131 has 12 divisors (see below), whose sum is σ = 333859552. Its totient is φ = 153944496.

The previous prime is 231025129. The next prime is 231025229. The reversal of 231025131 is 131520132.

It is not a de Polignac number, because 231025131 - 2¹ = 231025129 is a prime.

It is a super-2 number, since 2×231025131² = 106745222307134322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231025031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20265 + ... + 29541.

Almost surely, 2^231025131 is an apocalyptic number.

231025131 is a deficient number, since it is larger than the sum of its proper divisors (102834421).

231025131 is a wasteful number, since it uses less digits than its factorization.

231025131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12050 (or 12047 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 231025131 is about 15199.5108802882. The cubic root of 231025131 is about 613.6014940395.

Adding to 231025131 its reverse (131520132), we get a palindrome (362545263).

The spelling of 231025131 in words is "two hundred thirty-one million, twenty-five thousand, one hundred thirty-one".