31353412 has 12 divisors (see below), whose sum is σ = 55105596. Its totient is φ = 15608960.

The previous prime is 31353391. The next prime is 31353419. The reversal of 31353412 is 21435313.

It can be written as a sum of positive squares in 2 ways, for example, as 16112196 + 15241216 = 4014^2 + 3904^2 .

It is not an unprimeable number, because it can be changed into a prime (31353419) 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 3 ways as a sum of consecutive naturals, for example, 15889 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (4592133).

Almost surely, 2^31353412 is an apocalyptic number.

It is an amenable number.

31353412 is a deficient number, since it is larger than the sum of its proper divisors (23752184).

31353412 is a wasteful number, since it uses less digits than its factorization.

31353412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33878 (or 33876 counting only the distinct ones).

The product of its digits is 1080, while the sum is 22.

The square root of 31353412 is about 5599.4117548185. The cubic root of 31353412 is about 315.3273224746.

Adding to 31353412 its reverse (21435313), we get a palindrome (52788725).

The spelling of 31353412 in words is "thirty-one million, three hundred fifty-three thousand, four hundred twelve".