313155055661 has 16 divisors (see below), whose sum is σ = 368863135104. Its totient is φ = 260241159744.

The previous prime is 313155055637. The next prime is 313155055687. The reversal of 313155055661 is 166550551313.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 313155055661 - 2³⁸ = 38277148717 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 (313155055601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2062910 + ... + 2209503.

It is an arithmetic number, because the mean of its divisors is an integer number (23053945944).

Almost surely, 2^313155055661 is an apocalyptic number.

It is an amenable number.

313155055661 is a deficient number, since it is larger than the sum of its proper divisors (55708079443).

313155055661 is a wasteful number, since it uses less digits than its factorization.

313155055661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272740.

The product of its (nonzero) digits is 202500, while the sum is 41.

The spelling of 313155055661 in words is "three hundred thirteen billion, one hundred fifty-five million, fifty-five thousand, six hundred sixty-one".