31113023 has 2 divisors, whose sum is σ = 31113024. Its totient is φ = 31113022.

The previous prime is 31113011. The next prime is 31113029. The reversal of 31113023 is 32031113.

It is a strong prime.

It is an emirp because it is prime and its reverse (32031113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31113023 - 2¹⁰ = 31111999 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31112989 and 31113007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31113029) 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, 15556511 + 15556512.

It is an arithmetic number, because the mean of its divisors is an integer number (15556512).

Almost surely, 2^31113023 is an apocalyptic number.

31113023 is a deficient number, since it is larger than the sum of its proper divisors (1).

31113023 is an equidigital number, since it uses as much as digits as its factorization.

31113023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 31113023 is about 5577.9048934165. The cubic root of 31113023 is about 314.5193745368.

Adding to 31113023 its reverse (32031113), we get a palindrome (63144136).

The spelling of 31113023 in words is "thirty-one million, one hundred thirteen thousand, twenty-three".