316351346311661 has 4 divisors (see below), whose sum is σ = 316351400740572. Its totient is φ = 316351291882752.

The previous prime is 316351346311537. The next prime is 316351346311691. The reversal of 316351346311661 is 166113643153613.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65202701882761 + 251148644428900 = 8074819^2 + 15847670^2 .

It is a cyclic number.

It is not a de Polignac number, because 316351346311661 - 2¹⁴ = 316351346295277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (316351346311691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17289686 + ... + 30522711.

It is an arithmetic number, because the mean of its divisors is an integer number (79087850185143).

Almost surely, 2^{316351346311661} is an apocalyptic number.

It is an amenable number.

316351346311661 is a deficient number, since it is larger than the sum of its proper divisors (54428911).

316351346311661 is an equidigital number, since it uses as much as digits as its factorization.

316351346311661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54428910.

The product of its digits is 2099520, while the sum is 50.

The spelling of 316351346311661 in words is "three hundred sixteen trillion, three hundred fifty-one billion, three hundred forty-six million, three hundred eleven thousand, six hundred sixty-one".