3121792129 has 9 divisors (see below), whose sum is σ = 3178957537. Its totient is φ = 3065639764.

The previous prime is 3121792117. The next prime is 3121792147. The reversal of 3121792129 is 9212971213.

The square root of 3121792129 is 55873.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3121792129 - 2¹¹ = 3121790081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121792109) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3296034 + ... + 3296980.

Almost surely, 2^3121792129 is an apocalyptic number.

3121792129 is the 55873-rd square number.

3121792129 is the 27937-th centered octagonal number.

It is an amenable number.

3121792129 is a deficient number, since it is larger than the sum of its proper divisors (57165408).

3121792129 is an frugal number, since it uses more digits than its factorization.

3121792129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 1006 counting only the distinct ones).

The product of its digits is 13608, while the sum is 37.

The cubic root of 3121792129 is about 1461.5084380091.

The spelling of 3121792129 in words is "three billion, one hundred twenty-one million, seven hundred ninety-two thousand, one hundred twenty-nine".