31112423 has 4 divisors (see below), whose sum is σ = 31129800. Its totient is φ = 31095048.

The previous prime is 31112401. The next prime is 31112441. The reversal of 31112423 is 32421113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32421113 = 431 ⋅75223.

It is a cyclic number.

It is not a de Polignac number, because 31112423 - 2⁶ = 31112359 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112453) 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, 5648 + ... + 9701.

It is an arithmetic number, because the mean of its divisors is an integer number (7782450).

Almost surely, 2^31112423 is an apocalyptic number.

31112423 is a deficient number, since it is larger than the sum of its proper divisors (17377).

31112423 is a wasteful number, since it uses less digits than its factorization.

31112423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17376.

The product of its digits is 144, while the sum is 17.

The square root of 31112423 is about 5577.8511095224. The cubic root of 31112423 is about 314.5173527378.

Adding to 31112423 its reverse (32421113), we get a palindrome (63533536).

The spelling of 31112423 in words is "thirty-one million, one hundred twelve thousand, four hundred twenty-three".