31053631644 has 36 divisors (see below), whose sum is σ = 89710492144. Its totient is φ = 8872466112.

The previous prime is 31053631639. The next prime is 31053631681. The reversal of 31053631644 is 44613635013.

31053631644 is a `hidden beast` number, since 3 + 1 + 0 + 5 + 3 + 6 + 3 + 1 + 644 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 31053631599 and 31053631608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61614097 + ... + 61614600.

Almost surely, 2^31053631644 is an apocalyptic number.

It is an amenable number.

31053631644 is an abundant number, since it is smaller than the sum of its proper divisors (58656860500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31053631644 is a wasteful number, since it uses less digits than its factorization.

31053631644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123228714 (or 123228709 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The spelling of 31053631644 in words is "thirty-one billion, fifty-three million, six hundred thirty-one thousand, six hundred forty-four".