3121956492 has 24 divisors (see below), whose sum is σ = 7286734896. Its totient is φ = 1040342208.

The previous prime is 3121956473. The next prime is 3121956493. The reversal of 3121956492 is 2946591213.

It is a super-2 number, since 2×3121956492² = 19493224675881892128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3121956493) 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, 5218 + ... + 79190.

It is an arithmetic number, because the mean of its divisors is an integer number (303613954).

Almost surely, 2^3121956492 is an apocalyptic number.

It is an amenable number.

3121956492 is an abundant number, since it is smaller than the sum of its proper divisors (4164778404).

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

3121956492 is a wasteful number, since it uses less digits than its factorization.

3121956492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77497 (or 77495 counting only the distinct ones).

The product of its digits is 116640, while the sum is 42.

The square root of 3121956492 is about 55874.4708431319. The cubic root of 3121956492 is about 1461.5340871326.

The spelling of 3121956492 in words is "three billion, one hundred twenty-one million, nine hundred fifty-six thousand, four hundred ninety-two".