31323023 has 2 divisors, whose sum is σ = 31323024. Its totient is φ = 31323022.

The previous prime is 31322983. The next prime is 31323107. The reversal of 31323023 is 32032313.

It is a weak prime.

It is an emirp because it is prime and its reverse (32032313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31323023 - 2²⁴ = 14545807 is a prime.

It is a super-2 number, since 2×31323023² = 1962263539717058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31322992 and 31323010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31323223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661511 + 15661512.

It is an arithmetic number, because the mean of its divisors is an integer number (15661512).

Almost surely, 2^31323023 is an apocalyptic number.

31323023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31323023 is an equidigital number, since it uses as much as digits as its factorization.

31323023 is an evil number, because the sum of its binary digits is even.

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

The square root of 31323023 is about 5596.6975083526. The cubic root of 31323023 is about 315.2254135279.

Adding to 31323023 its reverse (32032313), we get a palindrome (63355336).

The spelling of 31323023 in words is "thirty-one million, three hundred twenty-three thousand, twenty-three".