3121672251 has 4 divisors (see below), whose sum is σ = 4162229672. Its totient is φ = 2081114832.

The previous prime is 3121672237. The next prime is 3121672261. The reversal of 3121672251 is 1522761213.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 3121672251 - 2⁹ = 3121671739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121672231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520278706 + ... + 520278711.

It is an arithmetic number, because the mean of its divisors is an integer number (1040557418).

Almost surely, 2^3121672251 is an apocalyptic number.

3121672251 is a deficient number, since it is larger than the sum of its proper divisors (1040557421).

3121672251 is a wasteful number, since it uses less digits than its factorization.

3121672251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040557420.

The product of its digits is 5040, while the sum is 30.

The square root of 3121672251 is about 55871.9272175213. The cubic root of 3121672251 is about 1461.4897302771.

The spelling of 3121672251 in words is "three billion, one hundred twenty-one million, six hundred seventy-two thousand, two hundred fifty-one".