3121948312 has 32 divisors (see below), whose sum is σ = 6728580000. Its totient is φ = 1330239744.

The previous prime is 3121948303. The next prime is 3121948327. The reversal of 3121948312 is 2138491213.

It is a happy number.

It is a super-2 number, since 2×3121948312² = 19493122525599298688, which contains 22 as substring.

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, 151437 + ... + 170812.

It is an arithmetic number, because the mean of its divisors is an integer number (210268125).

Almost surely, 2^3121948312 is an apocalyptic number.

It is an amenable number.

3121948312 is an abundant number, since it is smaller than the sum of its proper divisors (3606631688).

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

3121948312 is a wasteful number, since it uses less digits than its factorization.

3121948312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322435 (or 322431 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 3121948312 is about 55874.3976432856. The cubic root of 3121948312 is about 1461.5328106511.

The spelling of 3121948312 in words is "three billion, one hundred twenty-one million, nine hundred forty-eight thousand, three hundred twelve".