31344325 has 12 divisors (see below), whose sum is σ = 39041028. Its totient is φ = 24963200.

The previous prime is 31344307. The next prime is 31344329. The reversal of 31344325 is 52344313.

It can be written as a sum of positive squares in 6 ways, for example, as 4532641 + 26811684 = 2129^2 + 5178^2 .

It is not a de Polignac number, because 31344325 - 2⁷ = 31344197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 31344325.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31344329) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3135 + ... + 8515.

It is an arithmetic number, because the mean of its divisors is an integer number (3253419).

Almost surely, 2^31344325 is an apocalyptic number.

It is an amenable number.

31344325 is a deficient number, since it is larger than the sum of its proper divisors (7696703).

31344325 is a wasteful number, since it uses less digits than its factorization.

31344325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5624 (or 5619 counting only the distinct ones).

The product of its digits is 4320, while the sum is 25.

The square root of 31344325 is about 5598.6002714964. The cubic root of 31344325 is about 315.2968562929.

Adding to 31344325 its reverse (52344313), we get a palindrome (83688638).

The spelling of 31344325 in words is "thirty-one million, three hundred forty-four thousand, three hundred twenty-five".