31322023 has 2 divisors, whose sum is σ = 31322024. Its totient is φ = 31322022.

The previous prime is 31321987. The next prime is 31322029. The reversal of 31322023 is 32022313.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31322023 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31321988 and 31322006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31322029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15661011 + 15661012.

It is an arithmetic number, because the mean of its divisors is an integer number (15661012).

Almost surely, 2^31322023 is an apocalyptic number.

31322023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31322023 is an equidigital number, since it uses as much as digits as its factorization.

31322023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 31322023 is about 5596.6081692397. The cubic root of 31322023 is about 315.2220589265. Note that the first 3 decimals are identical.

Adding to 31322023 its reverse (32022313), we get a palindrome (63344336).

The spelling of 31322023 in words is "thirty-one million, three hundred twenty-two thousand, twenty-three".