51232131305 has 16 divisors (see below), whose sum is σ = 62717081088. Its totient is φ = 40164984000.

The previous prime is 51232131283. The next prime is 51232131317. The reversal of 51232131305 is 50313123215.

It is not a de Polignac number, because 51232131305 - 2¹² = 51232127209 is a prime.

It is a super-2 number, since 2×51232131305² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227261 + ... + 392570.

It is an arithmetic number, because the mean of its divisors is an integer number (3919817568).

Almost surely, 2^51232131305 is an apocalyptic number.

It is an amenable number.

51232131305 is a deficient number, since it is larger than the sum of its proper divisors (11484949783).

51232131305 is a wasteful number, since it uses less digits than its factorization.

51232131305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620168.

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 51232131305 in words is "fifty-one billion, two hundred thirty-two million, one hundred thirty-one thousand, three hundred five".