3121969402 has 16 divisors (see below), whose sum is σ = 4704982560. Its totient is φ = 1553655312.

The previous prime is 3121969397. The next prime is 3121969427. The reversal of 3121969402 is 2049691213.

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, 574048 + ... + 579460.

It is an arithmetic number, because the mean of its divisors is an integer number (294061410).

Almost surely, 2^3121969402 is an apocalyptic number.

3121969402 is a deficient number, since it is larger than the sum of its proper divisors (1583013158).

3121969402 is a wasteful number, since it uses less digits than its factorization.

3121969402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 3121969402 is about 55874.5863698336. The cubic root of 3121969402 is about 1461.5361017217.

The spelling of 3121969402 in words is "three billion, one hundred twenty-one million, nine hundred sixty-nine thousand, four hundred two".