31377447051 has 8 divisors (see below), whose sum is σ = 41844340944. Its totient is φ = 20914425600.

The previous prime is 31377447047. The next prime is 31377447091. The reversal of 31377447051 is 15074477313.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31377447051 - 2² = 31377447047 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 31377446994 and 31377447012.

It is not an unprimeable number, because it can be changed into a prime (31377447091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 949150 + ... + 981651.

It is an arithmetic number, because the mean of its divisors is an integer number (5230542618).

Almost surely, 2^31377447051 is an apocalyptic number.

31377447051 is a deficient number, since it is larger than the sum of its proper divisors (10466893893).

31377447051 is a wasteful number, since it uses less digits than its factorization.

31377447051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1936221.

The product of its (nonzero) digits is 246960, while the sum is 42.

It can be divided in two parts, 313774 and 47051, that added together give a triangular number (360825 = T₈₄₉).

The spelling of 31377447051 in words is "thirty-one billion, three hundred seventy-seven million, four hundred forty-seven thousand, fifty-one".