231431312311130 has 16 divisors (see below), whose sum is σ = 426736761237864. Its totient is φ = 90314658462720.

The previous prime is 231431312311109. The next prime is 231431312311139. The reversal of 231431312311130 is 31113213134132.

It can be written as a sum of positive squares in 4 ways, for example, as 102831788641201 + 128599523669929 = 10140601^2 + 11340173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 231431312311093 and 231431312311102.

It is not an unprimeable number, because it can be changed into a prime (231431312311139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282233307287 + ... + 282233308106.

Almost surely, 2^{231431312311130} is an apocalyptic number.

231431312311130 is a deficient number, since it is larger than the sum of its proper divisors (195305448926734).

231431312311130 is a wasteful number, since it uses less digits than its factorization.

231431312311130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564466615441.

The product of its (nonzero) digits is 3888, while the sum is 29.

Adding to 231431312311130 its reverse (31113213134132), we get a palindrome (262544525445262).

The spelling of 231431312311130 in words is "two hundred thirty-one trillion, four hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, one hundred thirty".