231515455452152 has 8 divisors (see below), whose sum is σ = 434091478972800. Its totient is φ = 115757727726072.

The previous prime is 231515455452107. The next prime is 231515455452199. The reversal of 231515455452152 is 251254554515132.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×231515455452152² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 231515455452152.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14469715965752 + ... + 14469715965767.

It is an arithmetic number, because the mean of its divisors is an integer number (54261434871600).

Almost surely, 2^{231515455452152} is an apocalyptic number.

It is an amenable number.

231515455452152 is a deficient number, since it is larger than the sum of its proper divisors (202576023520648).

231515455452152 is a wasteful number, since it uses less digits than its factorization.

231515455452152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28939431931525 (or 28939431931521 counting only the distinct ones).

The product of its digits is 6000000, while the sum is 50.

The spelling of 231515455452152 in words is "two hundred thirty-one trillion, five hundred fifteen billion, four hundred fifty-five million, four hundred fifty-two thousand, one hundred fifty-two".