653107971731 has 2 divisors, whose sum is σ = 653107971732. Its totient is φ = 653107971730.

The previous prime is 653107971727. The next prime is 653107971827. The reversal of 653107971731 is 137179701356.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 653107971731 - 2² = 653107971727 is a prime.

It is a super-2 number, since 2×653107971731² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 653107971731.

It is not a weakly prime, because it can be changed into another prime (653107973731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 326553985865 + 326553985866.

It is an arithmetic number, because the mean of its divisors is an integer number (326553985866).

Almost surely, 2^653107971731 is an apocalyptic number.

653107971731 is a deficient number, since it is larger than the sum of its proper divisors (1).

653107971731 is an equidigital number, since it uses as much as digits as its factorization.

653107971731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 833490, while the sum is 50.

The spelling of 653107971731 in words is "six hundred fifty-three billion, one hundred seven million, nine hundred seventy-one thousand, seven hundred thirty-one".