31423413 has 8 divisors (see below), whose sum is σ = 47883328. Its totient is φ = 17956224.

The previous prime is 31423391. The next prime is 31423421. The reversal of 31423413 is 31432413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31423413 - 2⁹ = 31422901 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 1496353 = 31423413 / (3 + 1 + 4 + 2 + 3 + 4 + 1 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31423413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423433) 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 in 7 ways as a sum of consecutive naturals, for example, 748156 + ... + 748197.

It is an arithmetic number, because the mean of its divisors is an integer number (5985416).

Almost surely, 2^31423413 is an apocalyptic number.

It is an amenable number.

31423413 is a deficient number, since it is larger than the sum of its proper divisors (16459915).

31423413 is a wasteful number, since it uses less digits than its factorization.

31423413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496363.

The product of its digits is 864, while the sum is 21.

The square root of 31423413 is about 5605.6590156734. The cubic root of 31423413 is about 315.5618192393.

Adding to 31423413 its reverse (31432413), we get a palindrome (62855826).

It can be divided in two parts, 3142 and 3413, that added together give a triangular number (6555 = T₁₁₄).

The spelling of 31423413 in words is "thirty-one million, four hundred twenty-three thousand, four hundred thirteen".