31142296 has 16 divisors (see below), whose sum is σ = 58584240. Its totient is φ = 15519840.

The previous prime is 31142263. The next prime is 31142297. The reversal of 31142296 is 69224113.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31142297) 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, 3771 + ... + 8746.

It is an arithmetic number, because the mean of its divisors is an integer number (3661515).

Almost surely, 2^31142296 is an apocalyptic number.

It is an amenable number.

31142296 is a deficient number, since it is larger than the sum of its proper divisors (27441944).

31142296 is a wasteful number, since it uses less digits than its factorization.

31142296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834 (or 12830 counting only the distinct ones).

The product of its digits is 2592, while the sum is 28.

The square root of 31142296 is about 5580.5282904041. The cubic root of 31142296 is about 314.6179831878.

The spelling of 31142296 in words is "thirty-one million, one hundred forty-two thousand, two hundred ninety-six".