231515076345 has 32 divisors (see below), whose sum is σ = 423384192000. Its totient is φ = 105824879040.

The previous prime is 231515076343. The next prime is 231515076347. The reversal of 231515076345 is 543670515132.

It is an interprime number because it is at equal distance from previous prime (231515076343) and next prime (231515076347).

It is not a de Polignac number, because 231515076345 - 2¹ = 231515076343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 231515076297 and 231515076306.

It is not an unprimeable number, because it can be changed into a prime (231515076341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 997390 + ... + 1207400.

It is an arithmetic number, because the mean of its divisors is an integer number (13230756000).

Almost surely, 2^231515076345 is an apocalyptic number.

It is an amenable number.

231515076345 is a deficient number, since it is larger than the sum of its proper divisors (191869115655).

231515076345 is a wasteful number, since it uses less digits than its factorization.

231515076345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220525.

The product of its (nonzero) digits is 378000, while the sum is 42.

The spelling of 231515076345 in words is "two hundred thirty-one billion, five hundred fifteen million, seventy-six thousand, three hundred forty-five".