2531478812 has 12 divisors (see below), whose sum is σ = 4434090360. Its totient is φ = 1264595856.

The previous prime is 2531478809. The next prime is 2531478821. The reversal of 2531478812 is 2188741352.

2531478812 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 2531478812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 280898 + ... + 289769.

It is an arithmetic number, because the mean of its divisors is an integer number (369507530).

Almost surely, 2^2531478812 is an apocalyptic number.

It is an amenable number.

2531478812 is a deficient number, since it is larger than the sum of its proper divisors (1902611548).

2531478812 is a wasteful number, since it uses less digits than its factorization.

2531478812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571780 (or 571778 counting only the distinct ones).

The product of its digits is 107520, while the sum is 41.

The square root of 2531478812 is about 50313.8033942973. The cubic root of 2531478812 is about 1362.8815079791.

The spelling of 2531478812 in words is "two billion, five hundred thirty-one million, four hundred seventy-eight thousand, eight hundred twelve".