31752997 has 2 divisors, whose sum is σ = 31752998. Its totient is φ = 31752996.

The previous prime is 31752977. The next prime is 31753013. The reversal of 31752997 is 79925713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30980356 + 772641 = 5566^2 + 879^2 .

It is a cyclic number.

It is not a de Polignac number, because 31752997 - 2⁷ = 31752869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31752907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15876498 + 15876499.

It is an arithmetic number, because the mean of its divisors is an integer number (15876499).

Almost surely, 2^31752997 is an apocalyptic number.

It is an amenable number.

31752997 is a deficient number, since it is larger than the sum of its proper divisors (1).

31752997 is an equidigital number, since it uses as much as digits as its factorization.

31752997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 119070, while the sum is 43.

The square root of 31752997 is about 5634.9797692627. The cubic root of 31752997 is about 316.6612395500.

The spelling of 31752997 in words is "thirty-one million, seven hundred fifty-two thousand, nine hundred ninety-seven".