31140296 has 16 divisors (see below), whose sum is σ = 63696240. Its totient is φ = 14154640.

The previous prime is 31140293. The next prime is 31140313. The reversal of 31140296 is 69204113.

It is not an unprimeable number, because it can be changed into a prime (31140293) 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, 176846 + ... + 177021.

It is an arithmetic number, because the mean of its divisors is an integer number (3981015).

Almost surely, 2^31140296 is an apocalyptic number.

It is an amenable number.

31140296 is an abundant number, since it is smaller than the sum of its proper divisors (32555944).

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

31140296 is a wasteful number, since it uses less digits than its factorization.

31140296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353884 (or 353880 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 31140296 is about 5580.3490930228. The cubic root of 31140296 is about 314.6112479807.

The spelling of 31140296 in words is "thirty-one million, one hundred forty thousand, two hundred ninety-six".