31324253 has 4 divisors (see below), whose sum is σ = 32052768. Its totient is φ = 30595740.

The previous prime is 31324201. The next prime is 31324259. The reversal of 31324253 is 35242313.

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 not a de Polignac number, because 31324253 - 2²⁴ = 14547037 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 (31324259) 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, 364193 + ... + 364278.

It is an arithmetic number, because the mean of its divisors is an integer number (8013192).

Almost surely, 2^31324253 is an apocalyptic number.

It is an amenable number.

31324253 is a deficient number, since it is larger than the sum of its proper divisors (728515).

31324253 is an equidigital number, since it uses as much as digits as its factorization.

31324253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728514.

The product of its digits is 2160, while the sum is 23.

The square root of 31324253 is about 5596.8073935057. The cubic root of 31324253 is about 315.2295395896.

Adding to 31324253 its reverse (35242313), we get a palindrome (66566566).

The spelling of 31324253 in words is "thirty-one million, three hundred twenty-four thousand, two hundred fifty-three".