631416313 has 4 divisors (see below), whose sum is σ = 688817808. Its totient is φ = 574014820.

The previous prime is 631416311. The next prime is 631416337. The reversal of 631416313 is 313614136.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 631416313 - 2¹ = 631416311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (631416311) 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, 28700731 + ... + 28700752.

It is an arithmetic number, because the mean of its divisors is an integer number (172204452).

Almost surely, 2^631416313 is an apocalyptic number.

It is an amenable number.

631416313 is a deficient number, since it is larger than the sum of its proper divisors (57401495).

631416313 is a wasteful number, since it uses less digits than its factorization.

631416313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57401494.

The product of its digits is 3888, while the sum is 28.

The square root of 631416313 is about 25127.9985872333. The cubic root of 631416313 is about 857.9038154486.

The spelling of 631416313 in words is "six hundred thirty-one million, four hundred sixteen thousand, three hundred thirteen".