313773561 has 8 divisors (see below), whose sum is σ = 464849760. Its totient is φ = 209182356.

The previous prime is 313773557. The next prime is 313773583. The reversal of 313773561 is 165377313.

It is a happy number.

It is not a de Polignac number, because 313773561 - 2² = 313773557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313773511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5810595 + ... + 5810648.

It is an arithmetic number, because the mean of its divisors is an integer number (58106220).

Almost surely, 2^313773561 is an apocalyptic number.

It is an amenable number.

313773561 is a deficient number, since it is larger than the sum of its proper divisors (151076199).

313773561 is a wasteful number, since it uses less digits than its factorization.

313773561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11621252 (or 11621246 counting only the distinct ones).

The product of its digits is 39690, while the sum is 36.

The square root of 313773561 is about 17713.6546483214. The cubic root of 313773561 is about 679.5250150384.

The spelling of 313773561 in words is "three hundred thirteen million, seven hundred seventy-three thousand, five hundred sixty-one".