31752745247 has 2 divisors, whose sum is σ = 31752745248. Its totient is φ = 31752745246.

The previous prime is 31752745237. The next prime is 31752745273. The reversal of 31752745247 is 74254725713.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31752745247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31752745237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15876372623 + 15876372624.

It is an arithmetic number, because the mean of its divisors is an integer number (15876372624).

Almost surely, 2^31752745247 is an apocalyptic number.

31752745247 is a deficient number, since it is larger than the sum of its proper divisors (1).

31752745247 is an equidigital number, since it uses as much as digits as its factorization.

31752745247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1646400, while the sum is 47.

The spelling of 31752745247 in words is "thirty-one billion, seven hundred fifty-two million, seven hundred forty-five thousand, two hundred forty-seven".