20095431 has 4 divisors (see below), whose sum is σ = 26793912. Its totient is φ = 13396952.

The previous prime is 20095423. The next prime is 20095433. The reversal of 20095431 is 13459002.

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 20095431 - 2³ = 20095423 is a prime.

It is a super-2 number, since 2×20095431² = 807652694151522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20095433) 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, 3349236 + ... + 3349241.

It is an arithmetic number, because the mean of its divisors is an integer number (6698478).

Almost surely, 2^20095431 is an apocalyptic number.

20095431 is a deficient number, since it is larger than the sum of its proper divisors (6698481).

20095431 is an equidigital number, since it uses as much as digits as its factorization.

20095431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6698480.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 20095431 is about 4482.7927679071. The cubic root of 20095431 is about 271.8728094420.

The spelling of 20095431 in words is "twenty million, ninety-five thousand, four hundred thirty-one".