20075231 has 12 divisors (see below), whose sum is σ = 22187592. Its totient is φ = 18150000.

The previous prime is 20075227. The next prime is 20075261. The reversal of 20075231 is 13257002.

It is not a de Polignac number, because 20075231 - 2² = 20075227 is a prime.

It is a super-2 number, since 2×20075231² = 806029799406722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20075261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30041 + ... + 30701.

It is an arithmetic number, because the mean of its divisors is an integer number (1848966).

Almost surely, 2^20075231 is an apocalyptic number.

20075231 is a deficient number, since it is larger than the sum of its proper divisors (2112361).

20075231 is a wasteful number, since it uses less digits than its factorization.

20075231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 20075231 is about 4480.5391416659. The cubic root of 20075231 is about 271.7816830575.

The spelling of 20075231 in words is "twenty million, seventy-five thousand, two hundred thirty-one".