31146396 has 24 divisors (see below), whose sum is σ = 76500480. Its totient is φ = 9835632.

The previous prime is 31146391. The next prime is 31146407. The reversal of 31146396 is 69364113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31146391) 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 7 ways as a sum of consecutive naturals, for example, 68076 + ... + 68531.

It is an arithmetic number, because the mean of its divisors is an integer number (3187520).

Almost surely, 2^31146396 is an apocalyptic number.

It is an amenable number.

31146396 is an abundant number, since it is smaller than the sum of its proper divisors (45354084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31146396 is a wasteful number, since it uses less digits than its factorization.

31146396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136633 (or 136631 counting only the distinct ones).

The product of its digits is 11664, while the sum is 33.

The square root of 31146396 is about 5580.8956270477. The cubic root of 31146396 is about 314.6317894609.

The spelling of 31146396 in words is "thirty-one million, one hundred forty-six thousand, three hundred ninety-six".