31112023 has 4 divisors (see below), whose sum is σ = 32942160. Its totient is φ = 29281888.

The previous prime is 31112021. The next prime is 31112027. The reversal of 31112023 is 32021113.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 31112023 - 2¹ = 31112021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31111994 and 31112012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 915043 + ... + 915076.

It is an arithmetic number, because the mean of its divisors is an integer number (8235540).

Almost surely, 2^31112023 is an apocalyptic number.

31112023 is a deficient number, since it is larger than the sum of its proper divisors (1830137).

31112023 is a wasteful number, since it uses less digits than its factorization.

31112023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830136.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 31112023 is about 5577.8152533048. The cubic root of 31112023 is about 314.5160048573.

Adding to 31112023 its reverse (32021113), we get a palindrome (63133136).

The spelling of 31112023 in words is "thirty-one million, one hundred twelve thousand, twenty-three".