31245797 has 8 divisors (see below), whose sum is σ = 35008032. Its totient is φ = 27637200.

The previous prime is 31245769. The next prime is 31245817. The reversal of 31245797 is 79754213.

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 31245797 - 2²⁰ = 30197221 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 31245797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31245757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37979 + ... + 38792.

It is an arithmetic number, because the mean of its divisors is an integer number (4376004).

Almost surely, 2^31245797 is an apocalyptic number.

31245797 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

31245797 is a deficient number, since it is larger than the sum of its proper divisors (3762235).

31245797 is a wasteful number, since it uses less digits than its factorization.

31245797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76819.

The product of its digits is 52920, while the sum is 38.

The square root of 31245797 is about 5589.7940033601. The cubic root of 31245797 is about 314.9661406455.

The spelling of 31245797 in words is "thirty-one million, two hundred forty-five thousand, seven hundred ninety-seven".