31142444408 has 8 divisors (see below), whose sum is σ = 58392083280. Its totient is φ = 15571222200.

The previous prime is 31142444407. The next prime is 31142444413. The reversal of 31142444408 is 80444424113.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142444407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1946402768 + ... + 1946402783.

It is an arithmetic number, because the mean of its divisors is an integer number (7299010410).

Almost surely, 2^31142444408 is an apocalyptic number.

It is an amenable number.

31142444408 is a deficient number, since it is larger than the sum of its proper divisors (27249638872).

31142444408 is a wasteful number, since it uses less digits than its factorization.

31142444408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3892805557 (or 3892805553 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 35.

The spelling of 31142444408 in words is "thirty-one billion, one hundred forty-two million, four hundred forty-four thousand, four hundred eight".