31069397 has 8 divisors (see below), whose sum is σ = 31905792. Its totient is φ = 30240400.

The previous prime is 31069393. The next prime is 31069399. The reversal of 31069397 is 79396013.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31069397 - 2² = 31069393 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31069397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31069393) 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, 7247 + ... + 10707.

It is an arithmetic number, because the mean of its divisors is an integer number (3988224).

Almost surely, 2^31069397 is an apocalyptic number.

It is an amenable number.

31069397 is a deficient number, since it is larger than the sum of its proper divisors (836395).

31069397 is a wasteful number, since it uses less digits than its factorization.

31069397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3699.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 31069397 is about 5573.9929135226. The cubic root of 31069397 is about 314.3723017131.

The spelling of 31069397 in words is "thirty-one million, sixty-nine thousand, three hundred ninety-seven".