611631336313 has 2 divisors, whose sum is σ = 611631336314. Its totient is φ = 611631336312.

The previous prime is 611631336263. The next prime is 611631336341. The reversal of 611631336313 is 313633136116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 566146390329 + 45484945984 = 752427^2 + 213272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611631336313 is a prime.

It is a super-3 number, since 3×611631336313³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (611631336343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305815668156 + 305815668157.

It is an arithmetic number, because the mean of its divisors is an integer number (305815668157).

Almost surely, 2^611631336313 is an apocalyptic number.

It is an amenable number.

611631336313 is a deficient number, since it is larger than the sum of its proper divisors (1).

611631336313 is an equidigital number, since it uses as much as digits as its factorization.

611631336313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 37.

The spelling of 611631336313 in words is "six hundred eleven billion, six hundred thirty-one million, three hundred thirty-six thousand, three hundred thirteen".