231630785316 has 144 divisors (see below), whose sum is σ = 718750032000. Its totient is φ = 62696991168.

The previous prime is 231630785273. The next prime is 231630785339. The reversal of 231630785316 is 613587036132.

231630785316 is a `hidden beast` number, since 2 + 3 + 1 + 630 + 7 + 8 + 5 + 3 + 1 + 6 = 666.

231630785316 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×231630785316² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 259035 + ... + 728258.

Almost surely, 2^231630785316 is an apocalyptic number.

It is an amenable number.

231630785316 is an abundant number, since it is smaller than the sum of its proper divisors (487119246684).

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

231630785316 is a wasteful number, since it uses less digits than its factorization.

231630785316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987343 (or 987324 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 231630785316 in words is "two hundred thirty-one billion, six hundred thirty million, seven hundred eighty-five thousand, three hundred sixteen".