31112413 has 4 divisors (see below), whose sum is σ = 31550688. Its totient is φ = 30674140.

The previous prime is 31112401. The next prime is 31112441. The reversal of 31112413 is 31421113.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31112413 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, 219031 + ... + 219172.

It is an arithmetic number, because the mean of its divisors is an integer number (7887672).

Almost surely, 2^31112413 is an apocalyptic number.

It is an amenable number.

31112413 is a deficient number, since it is larger than the sum of its proper divisors (438275).

31112413 is an equidigital number, since it uses as much as digits as its factorization.

31112413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438274.

The product of its digits is 72, while the sum is 16.

The square root of 31112413 is about 5577.8502131197. The cubic root of 31112413 is about 314.5173190409.

Adding to 31112413 its reverse (31421113), we get a palindrome (62533526).

The spelling of 31112413 in words is "thirty-one million, one hundred twelve thousand, four hundred thirteen".