31270797 has 6 divisors (see below), whose sum is σ = 45168942. Its totient is φ = 20847192.

The previous prime is 31270793. The next prime is 31270817. The reversal of 31270797 is 79707213.

It can be written as a sum of positive squares in only one way, i.e., 24890121 + 6380676 = 4989^2 + 2526^2 .

It is not a de Polignac number, because 31270797 - 2² = 31270793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31270793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1737258 + ... + 1737275.

It is an arithmetic number, because the mean of its divisors is an integer number (7528157).

Almost surely, 2^31270797 is an apocalyptic number.

It is an amenable number.

31270797 is a deficient number, since it is larger than the sum of its proper divisors (13898145).

31270797 is a wasteful number, since it uses less digits than its factorization.

31270797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474539 (or 3474536 counting only the distinct ones).

The product of its (nonzero) digits is 18522, while the sum is 36.

The square root of 31270797 is about 5592.0297745988. The cubic root of 31270797 is about 315.0501205206.

The spelling of 31270797 in words is "thirty-one million, two hundred seventy thousand, seven hundred ninety-seven".