231587310911516 has 24 divisors (see below), whose sum is σ = 483312648860160. Its totient is φ = 94936413168432.

The previous prime is 231587310911497. The next prime is 231587310911557. The reversal of 231587310911516 is 615119013785132.

It is a super-3 number, since 3×231587310911516³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179803812176 + ... + 179803813463.

It is an arithmetic number, because the mean of its divisors is an integer number (20138027035840).

Almost surely, 2^{231587310911516} is an apocalyptic number.

It is an amenable number.

231587310911516 is an abundant number, since it is smaller than the sum of its proper divisors (251725337948644).

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

231587310911516 is a wasteful number, since it uses less digits than its factorization.

231587310911516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359607625673 (or 359607625671 counting only the distinct ones).

The product of its (nonzero) digits is 1360800, while the sum is 53.

The spelling of 231587310911516 in words is "two hundred thirty-one trillion, five hundred eighty-seven billion, three hundred ten million, nine hundred eleven thousand, five hundred sixteen".