31204023 has 16 divisors (see below), whose sum is σ = 44294400. Its totient is φ = 19483200.

The previous prime is 31204021. The next prime is 31204037. The reversal of 31204023 is 32040213.

It is not a de Polignac number, because 31204023 - 2¹ = 31204021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31203993 and 31204011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31204021) 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, 1998 + ... + 8148.

It is an arithmetic number, because the mean of its divisors is an integer number (2768400).

Almost surely, 2^31204023 is an apocalyptic number.

31204023 is a deficient number, since it is larger than the sum of its proper divisors (13090377).

31204023 is a wasteful number, since it uses less digits than its factorization.

31204023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 31204023 is about 5586.0561221671. The cubic root of 31204023 is about 314.8257136146.

Adding to 31204023 its reverse (32040213), we get a palindrome (63244236).

The spelling of 31204023 in words is "thirty-one million, two hundred four thousand, twenty-three".