313535635081 has 2 divisors, whose sum is σ = 313535635082. Its totient is φ = 313535635080.

The previous prime is 313535635057. The next prime is 313535635087. The reversal of 313535635081 is 180536535313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 309603216400 + 3932418681 = 556420^2 + 62709^2 .

It is a cyclic number.

It is not a de Polignac number, because 313535635081 - 2¹⁵ = 313535602313 is a prime.

It is a super-2 number, since 2×313535635081² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (313535635087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156767817540 + 156767817541.

It is an arithmetic number, because the mean of its divisors is an integer number (156767817541).

Almost surely, 2^313535635081 is an apocalyptic number.

It is an amenable number.

313535635081 is a deficient number, since it is larger than the sum of its proper divisors (1).

313535635081 is an equidigital number, since it uses as much as digits as its factorization.

313535635081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486000, while the sum is 43.

The spelling of 313535635081 in words is "three hundred thirteen billion, five hundred thirty-five million, six hundred thirty-five thousand, eighty-one".