515230031320 has 16 divisors (see below), whose sum is σ = 1159267570560. Its totient is φ = 206092012512.

The previous prime is 515230031299. The next prime is 515230031357. The reversal of 515230031320 is 23130032515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6440375352 + ... + 6440375431.

It is an arithmetic number, because the mean of its divisors is an integer number (72454223160).

Almost surely, 2^515230031320 is an apocalyptic number.

It is an amenable number.

515230031320 is an abundant number, since it is smaller than the sum of its proper divisors (644037539240).

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

515230031320 is a wasteful number, since it uses less digits than its factorization.

515230031320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12880750794 (or 12880750790 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

Adding to 515230031320 its reverse (23130032515), we get a palindrome (538360063835).

The spelling of 515230031320 in words is "five hundred fifteen billion, two hundred thirty million, thirty-one thousand, three hundred twenty".