631575113 has 4 divisors (see below), whose sum is σ = 680157828. Its totient is φ = 582992400.

The previous prime is 631575107. The next prime is 631575149. The reversal of 631575113 is 311575136.

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 33674809 + 597900304 = 5803^2 + 24452^2 .

It is a cyclic number.

It is not a de Polignac number, because 631575113 - 2¹⁶ = 631509577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 631575113.

It is not an unprimeable number, because it can be changed into a prime (631575173) 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, 24291338 + ... + 24291363.

It is an arithmetic number, because the mean of its divisors is an integer number (170039457).

Almost surely, 2^631575113 is an apocalyptic number.

It is an amenable number.

631575113 is a deficient number, since it is larger than the sum of its proper divisors (48582715).

631575113 is a wasteful number, since it uses less digits than its factorization.

631575113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48582714.

The product of its digits is 9450, while the sum is 32.

The square root of 631575113 is about 25131.1582104765. The cubic root of 631575113 is about 857.9757298119.

The spelling of 631575113 in words is "six hundred thirty-one million, five hundred seventy-five thousand, one hundred thirteen".