31320300023 has 4 divisors (see below), whose sum is σ = 31323228888. Its totient is φ = 31317371160.

The previous prime is 31320300007. The next prime is 31320300031. The reversal of 31320300023 is 32000302313.

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 31320300023 - 2⁴ = 31320300007 is a prime.

It is a super-2 number, since 2×31320300023² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31320299974 and 31320300010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31320300043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1448333 + ... + 1469798.

It is an arithmetic number, because the mean of its divisors is an integer number (7830807222).

Almost surely, 2^31320300023 is an apocalyptic number.

31320300023 is a deficient number, since it is larger than the sum of its proper divisors (2928865).

31320300023 is a wasteful number, since it uses less digits than its factorization.

31320300023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2928864.

The product of its (nonzero) digits is 324, while the sum is 17.

Adding to 31320300023 its reverse (32000302313), we get a palindrome (63320602336).

The spelling of 31320300023 in words is "thirty-one billion, three hundred twenty million, three hundred thousand, twenty-three".