231131132302 has 32 divisors (see below), whose sum is σ = 404714050560. Its totient is φ = 96934500960.

The previous prime is 231131132293. The next prime is 231131132311. The reversal of 231131132302 is 203231131132.

It is an interprime number because it is at equal distance from previous prime (231131132293) and next prime (231131132311).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5355024 + ... + 5398012.

It is an arithmetic number, because the mean of its divisors is an integer number (12647314080).

Almost surely, 2^231131132302 is an apocalyptic number.

231131132302 is a deficient number, since it is larger than the sum of its proper divisors (173582918258).

231131132302 is a wasteful number, since it uses less digits than its factorization.

231131132302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51216.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 231131132302 its reverse (203231131132), we get a palindrome (434362263434).

The spelling of 231131132302 in words is "two hundred thirty-one billion, one hundred thirty-one million, one hundred thirty-two thousand, three hundred two".