3121290706 has 16 divisors (see below), whose sum is σ = 4851287640. Its totient is φ = 1504370560.

The previous prime is 3121290701. The next prime is 3121290709. The reversal of 3121290706 is 6070921213.

3121290706 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2769390625 + 351900081 = 52625^2 + 18759^2 .

It is not an unprimeable number, because it can be changed into a prime (3121290701) 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, 7825 + ... + 79396.

Almost surely, 2^3121290706 is an apocalyptic number.

3121290706 is a deficient number, since it is larger than the sum of its proper divisors (1729996934).

3121290706 is a wasteful number, since it uses less digits than its factorization.

3121290706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87869.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 3121290706 is about 55868.5126524772. The cubic root of 3121290706 is about 1461.4301845407.

The spelling of 3121290706 in words is "three billion, one hundred twenty-one million, two hundred ninety thousand, seven hundred six".