51031211315 has 32 divisors (see below), whose sum is σ = 71226432000. Its totient is φ = 34373357568.

The previous prime is 51031211311. The next prime is 51031211321. The reversal of 51031211315 is 51311213015.

It is a cyclic number.

It is not a de Polignac number, because 51031211315 - 2² = 51031211311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51031211311) 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, 2900816 + ... + 2918354.

It is an arithmetic number, because the mean of its divisors is an integer number (2225826000).

Almost surely, 2^51031211315 is an apocalyptic number.

51031211315 is a deficient number, since it is larger than the sum of its proper divisors (20195220685).

51031211315 is a wasteful number, since it uses less digits than its factorization.

51031211315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19019.

The product of its (nonzero) digits is 450, while the sum is 23.

The spelling of 51031211315 in words is "fifty-one billion, thirty-one million, two hundred eleven thousand, three hundred fifteen".