31143794448 has 40 divisors (see below), whose sum is σ = 86643635008. Its totient is φ = 9582705792.

The previous prime is 31143794441. The next prime is 31143794471. The reversal of 31143794448 is 84449734113.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 31143794397 and 31143794406.

It is not an unprimeable number, because it can be changed into a prime (31143794441) 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, 24954340 + ... + 24955587.

Almost surely, 2^31143794448 is an apocalyptic number.

It is an amenable number.

31143794448 is an abundant number, since it is smaller than the sum of its proper divisors (55499840560).

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

31143794448 is a wasteful number, since it uses less digits than its factorization.

31143794448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49909951 (or 49909945 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The spelling of 31143794448 in words is "thirty-one billion, one hundred forty-three million, seven hundred ninety-four thousand, four hundred forty-eight".