20375931 has 8 divisors (see below), whose sum is σ = 27341584. Its totient is φ = 13497120.

The previous prime is 20375921. The next prime is 20375933. The reversal of 20375931 is 13957302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20375931 - 2⁶ = 20375867 is a prime.

It is a super-2 number, since 2×20375931² = 830357128233522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20375933) 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, 21160 + ... + 22101.

It is an arithmetic number, because the mean of its divisors is an integer number (3417698).

Almost surely, 2^20375931 is an apocalyptic number.

20375931 is a deficient number, since it is larger than the sum of its proper divisors (6965653).

20375931 is a wasteful number, since it uses less digits than its factorization.

20375931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43421.

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 20375931 is about 4513.9706467809. The cubic root of 20375931 is about 273.1319385328.

The spelling of 20375931 in words is "twenty million, three hundred seventy-five thousand, nine hundred thirty-one".