3130745840 has 40 divisors (see below), whose sum is σ = 7707162960. Its totient is φ = 1178633216.

The previous prime is 3130745819. The next prime is 3130745869. The reversal of 3130745840 is 485470313.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 3130745840.

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, 1149650 + ... + 1152369.

It is an arithmetic number, because the mean of its divisors is an integer number (192679074).

Almost surely, 2^3130745840 is an apocalyptic number.

It is an amenable number.

3130745840 is an abundant number, since it is smaller than the sum of its proper divisors (4576417120).

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

3130745840 is a wasteful number, since it uses less digits than its factorization.

3130745840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302049 (or 2302043 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 3130745840 is about 55953.0681911189. The cubic root of 3130745840 is about 1462.9043705180.

The spelling of 3130745840 in words is "three billion, one hundred thirty million, seven hundred forty-five thousand, eight hundred forty".