231031230031 has 16 divisors (see below), whose sum is σ = 273350629440. Its totient is φ = 191051078400.

The previous prime is 231031229977. The next prime is 231031230097. The reversal of 231031230031 is 130032130132.

It is not a de Polignac number, because 231031230031 - 2¹⁹ = 231030705743 is a prime.

It is a super-2 number, since 2×231031230031² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231031229990 and 231031230008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231031210031) 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, 173286 + ... + 701491.

It is an arithmetic number, because the mean of its divisors is an integer number (17084414340).

Almost surely, 2^231031230031 is an apocalyptic number.

231031230031 is a deficient number, since it is larger than the sum of its proper divisors (42319399409).

231031230031 is a wasteful number, since it uses less digits than its factorization.

231031230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 876114.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 231031230031 its reverse (130032130132), we get a palindrome (361063360163).

The spelling of 231031230031 in words is "two hundred thirty-one billion, thirty-one million, two hundred thirty thousand, thirty-one".