231531503215130 has 256 divisors, whose sum is σ = 473871679488000. Its totient is φ = 80986368672000.

The previous prime is 231531503215081. The next prime is 231531503215157. The reversal of 231531503215130 is 31512305135132.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 96511671671 + ... + 96511674069.

It is an arithmetic number, because the mean of its divisors is an integer number (1851061248000).

Almost surely, 2^{231531503215130} is an apocalyptic number.

231531503215130 is an abundant number, since it is smaller than the sum of its proper divisors (242340176272870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231531503215130 is a wasteful number, since it uses less digits than its factorization.

231531503215130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4201.

The product of its (nonzero) digits is 40500, while the sum is 35.

The spelling of 231531503215130 in words is "two hundred thirty-one trillion, five hundred thirty-one billion, five hundred three million, two hundred fifteen thousand, one hundred thirty".