31530504323 has 4 divisors (see below), whose sum is σ = 31599499320. Its totient is φ = 31461509328.

The previous prime is 31530504307. The next prime is 31530504353. The reversal of 31530504323 is 32340503513.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32340503513 = 103 ⋅313985471.

It is a cyclic number.

It is not a de Polignac number, because 31530504323 - 2⁴ = 31530504307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31530504353) 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, 34496813 + ... + 34497726.

It is an arithmetic number, because the mean of its divisors is an integer number (7899874830).

Almost surely, 2^31530504323 is an apocalyptic number.

31530504323 is a deficient number, since it is larger than the sum of its proper divisors (68994997).

31530504323 is an equidigital number, since it uses as much as digits as its factorization.

31530504323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68994996.

The product of its (nonzero) digits is 16200, while the sum is 29.

The spelling of 31530504323 in words is "thirty-one billion, five hundred thirty million, five hundred four thousand, three hundred twenty-three".