631313086 has 4 divisors (see below), whose sum is σ = 946969632. Its totient is φ = 315656542.

The previous prime is 631313083. The next prime is 631313099. The reversal of 631313086 is 680313136.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631313083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157828270 + ... + 157828273.

It is an arithmetic number, because the mean of its divisors is an integer number (236742408).

Almost surely, 2^631313086 is an apocalyptic number.

631313086 is a deficient number, since it is larger than the sum of its proper divisors (315656546).

631313086 is a wasteful number, since it uses less digits than its factorization.

631313086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315656545.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 631313086 is about 25125.9444797604. The cubic root of 631313086 is about 857.8570614756.

Subtracting 631313086 from its reverse (680313136), we obtain a triangular number (49000050 = T₉₈₉₉).

The spelling of 631313086 in words is "six hundred thirty-one million, three hundred thirteen thousand, eighty-six".