31323000023 has 32 divisors (see below), whose sum is σ = 37463162880. Its totient is φ = 25629216480.

The previous prime is 31323000019. The next prime is 31323000029. The reversal of 31323000023 is 32000032313.

It is not a de Polignac number, because 31323000023 - 2² = 31323000019 is a prime.

It is a super-2 number, since 2×31323000023² (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 = 31322999965 and 31323000010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323000029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14697668 + ... + 14699798.

It is an arithmetic number, because the mean of its divisors is an integer number (1170723840).

Almost surely, 2^31323000023 is an apocalyptic number.

31323000023 is a deficient number, since it is larger than the sum of its proper divisors (6140162857).

31323000023 is a wasteful number, since it uses less digits than its factorization.

31323000023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267.

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

Adding to 31323000023 its reverse (32000032313), we get a palindrome (63323032336).

The spelling of 31323000023 in words is "thirty-one billion, three hundred twenty-three million, twenty-three", and thus it is an aban number.