2125393931 has 4 divisors (see below), whose sum is σ = 2125556664. Its totient is φ = 2125231200.

The previous prime is 2125393891. The next prime is 2125393967. The reversal of 2125393931 is 1393935212.

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

It is a cyclic number.

It is not a de Polignac number, because 2125393931 - 2¹⁴ = 2125377547 is a prime.

It is a super-2 number, since 2×2125393931² = 9034598723863265522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2125393031) 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, 59885 + ... + 88526.

It is an arithmetic number, because the mean of its divisors is an integer number (531389166).

Almost surely, 2^2125393931 is an apocalyptic number.

2125393931 is a deficient number, since it is larger than the sum of its proper divisors (162733).

2125393931 is a wasteful number, since it uses less digits than its factorization.

2125393931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162732.

The product of its digits is 43740, while the sum is 38.

The square root of 2125393931 is about 46101.9948700704. The cubic root of 2125393931 is about 1285.7202341483.

The spelling of 2125393931 in words is "two billion, one hundred twenty-five million, three hundred ninety-three thousand, nine hundred thirty-one".