231012431 has 16 divisors (see below), whose sum is σ = 263676000. Its totient is φ = 200631168.

The previous prime is 231012427. The next prime is 231012479. The reversal of 231012431 is 134210132.

It is a cyclic number.

It is not a de Polignac number, because 231012431 - 2² = 231012427 is a prime.

It is a super-2 number, since 2×231012431² = 106733486553059522, which 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 (231012401) 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, 33665 + ... + 39941.

It is an arithmetic number, because the mean of its divisors is an integer number (16479750).

Almost surely, 2^231012431 is an apocalyptic number.

231012431 is a deficient number, since it is larger than the sum of its proper divisors (32663569).

231012431 is a wasteful number, since it uses less digits than its factorization.

231012431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6458.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 231012431 is about 15199.0930979450. The cubic root of 231012431 is about 613.5902501231.

Adding to 231012431 its reverse (134210132), we get a palindrome (365222563).

It can be divided in two parts, 2310 and 12431, that added together give a palindrome (14741).

The spelling of 231012431 in words is "two hundred thirty-one million, twelve thousand, four hundred thirty-one".