31043538144 has 48 divisors (see below), whose sum is σ = 90543655440. Its totient is φ = 10347845760.

The previous prime is 31043538079. The next prime is 31043538161. The reversal of 31043538144 is 44183534013.

31043538144 is a `hidden beast` number, since 3 + 104 + 3 + 538 + 14 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

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 = 31043538099 and 31043538108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17964147 + ... + 17965874.

It is an arithmetic number, because the mean of its divisors is an integer number (1886326155).

Almost surely, 2^31043538144 is an apocalyptic number.

It is an amenable number.

31043538144 is an abundant number, since it is smaller than the sum of its proper divisors (59500117296).

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

31043538144 is a wasteful number, since it uses less digits than its factorization.

31043538144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35930040 (or 35930026 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 31043538144 in words is "thirty-one billion, forty-three million, five hundred thirty-eight thousand, one hundred forty-four".