31442873 has 16 divisors (see below), whose sum is σ = 40556160. Its totient is φ = 23654400.

The previous prime is 31442857. The next prime is 31442893. The reversal of 31442873 is 37824413.

It is not a de Polignac number, because 31442873 - 2⁴ = 31442857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31442813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4808 + ... + 9273.

It is an arithmetic number, because the mean of its divisors is an integer number (2534760).

Almost surely, 2^31442873 is an apocalyptic number.

It is an amenable number.

31442873 is a deficient number, since it is larger than the sum of its proper divisors (9113287).

31442873 is a wasteful number, since it uses less digits than its factorization.

31442873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14128.

The product of its digits is 16128, while the sum is 32.

The square root of 31442873 is about 5607.3944929887. The cubic root of 31442873 is about 315.6269465357.

The spelling of 31442873 in words is "thirty-one million, four hundred forty-two thousand, eight hundred seventy-three".