31132325 has 24 divisors (see below), whose sum is σ = 45205440. Its totient is φ = 20822400.

The previous prime is 31132303. The next prime is 31132327. The reversal of 31132325 is 52323113.

It is not a de Polignac number, because 31132325 - 2²⁴ = 14355109 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31132297 and 31132306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31132327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5006 + ... + 9344.

It is an arithmetic number, because the mean of its divisors is an integer number (1883560).

Almost surely, 2^31132325 is an apocalyptic number.

31132325 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

31132325 is a deficient number, since it is larger than the sum of its proper divisors (14073115).

31132325 is a wasteful number, since it uses less digits than its factorization.

31132325 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397 (or 4392 counting only the distinct ones).

The product of its digits is 540, while the sum is 20.

The square root of 31132325 is about 5579.6348446829. The cubic root of 31132325 is about 314.5844019476.

Adding to 31132325 its reverse (52323113), we get a palindrome (83455438).

The spelling of 31132325 in words is "thirty-one million, one hundred thirty-two thousand, three hundred twenty-five".