31893564949 has 8 divisors (see below), whose sum is σ = 32046100632. Its totient is φ = 31741163520.

The previous prime is 31893564931. The next prime is 31893564953. The reversal of 31893564949 is 94946539813.

It can be written as a sum of positive squares in 4 ways, for example, as 1178548900 + 30715016049 = 34330^2 + 175257^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 31893564949 - 2¹¹ = 31893562901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31893564449) 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, 459939 + ... + 524719.

It is an arithmetic number, because the mean of its divisors is an integer number (4005762579).

Almost surely, 2^31893564949 is an apocalyptic number.

It is an amenable number.

31893564949 is a deficient number, since it is larger than the sum of its proper divisors (152535683).

31893564949 is a wasteful number, since it uses less digits than its factorization.

31893564949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67127.

The product of its digits is 25194240, while the sum is 61.

The spelling of 31893564949 in words is "thirty-one billion, eight hundred ninety-three million, five hundred sixty-four thousand, nine hundred forty-nine".