31142996 has 6 divisors (see below), whose sum is σ = 54500250. Its totient is φ = 15571496.

The previous prime is 31142987. The next prime is 31143017. The reversal of 31142996 is 69924113.

It can be written as a sum of positive squares in only one way, i.e., 30958096 + 184900 = 5564^2 + 430^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3892871 + ... + 3892878.

It is an arithmetic number, because the mean of its divisors is an integer number (9083375).

Almost surely, 2^31142996 is an apocalyptic number.

It is an amenable number.

31142996 is a deficient number, since it is larger than the sum of its proper divisors (23357254).

31142996 is a wasteful number, since it uses less digits than its factorization.

31142996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785753 (or 7785751 counting only the distinct ones).

The product of its digits is 11664, while the sum is 35.

The square root of 31142996 is about 5580.5910081281. The cubic root of 31142996 is about 314.6203404422.

The spelling of 31142996 in words is "thirty-one million, one hundred forty-two thousand, nine hundred ninety-six".