31449216964 has 18 divisors (see below), whose sum is σ = 60494259182. Its totient is φ = 14295098400.

The previous prime is 31449216947. The next prime is 31449216973. The reversal of 31449216964 is 46961294413.

It can be written as a sum of positive squares in only one way, i.e., 30821313600 + 627903364 = 175560^2 + 25058^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 32488377 + ... + 32489344.

Almost surely, 2^31449216964 is an apocalyptic number.

It is an amenable number.

31449216964 is a deficient number, since it is larger than the sum of its proper divisors (29045042218).

31449216964 is a wasteful number, since it uses less digits than its factorization.

31449216964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64977747 (or 64977734 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The spelling of 31449216964 in words is "thirty-one billion, four hundred forty-nine million, two hundred sixteen thousand, nine hundred sixty-four".