31424313 has 16 divisors (see below), whose sum is σ = 45895680. Its totient is φ = 19036416.

The previous prime is 31424303. The next prime is 31424321. The reversal of 31424313 is 31342413.

It is not a de Polignac number, because 31424313 - 2¹² = 31420217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31424313.

It is not an unprimeable number, because it can be changed into a prime (31424303) 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 15 ways as a sum of consecutive naturals, for example, 9145 + ... + 12102.

It is an arithmetic number, because the mean of its divisors is an integer number (2868480).

Almost surely, 2^31424313 is an apocalyptic number.

It is an amenable number.

31424313 is a deficient number, since it is larger than the sum of its proper divisors (14471367).

31424313 is a wasteful number, since it uses less digits than its factorization.

31424313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21296.

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

The square root of 31424313 is about 5605.7392911194. The cubic root of 31424313 is about 315.5648318860.

Adding to 31424313 its reverse (31342413), we get a palindrome (62766726).

The spelling of 31424313 in words is "thirty-one million, four hundred twenty-four thousand, three hundred thirteen".