231778580130 has 48 divisors (see below), whose sum is σ = 607369411584. Its totient is φ = 61320944160.

The previous prime is 231778580129. The next prime is 231778580147. The reversal of 231778580130 is 31085877132.

231778580130 is a `hidden beast` number, since 2 + 31 + 7 + 7 + 8 + 580 + 1 + 30 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10127616 + ... + 10150475.

It is an arithmetic number, because the mean of its divisors is an integer number (12653529408).

Almost surely, 2^231778580130 is an apocalyptic number.

231778580130 is an abundant number, since it is smaller than the sum of its proper divisors (375590831454).

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

231778580130 is a wasteful number, since it uses less digits than its factorization.

231778580130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20278231 (or 20278228 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 231778580130 in words is "two hundred thirty-one billion, seven hundred seventy-eight million, five hundred eighty thousand, one hundred thirty".