631160261 has 4 divisors (see below), whose sum is σ = 631269024. Its totient is φ = 631051500.

The previous prime is 631160239. The next prime is 631160269. The reversal of 631160261 is 162061136.

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 631160261 - 2⁶ = 631160197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 631160261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631160269) 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, 45155 + ... + 57456.

It is an arithmetic number, because the mean of its divisors is an integer number (157817256).

Almost surely, 2^631160261 is an apocalyptic number.

It is an amenable number.

631160261 is a deficient number, since it is larger than the sum of its proper divisors (108763).

631160261 is a wasteful number, since it uses less digits than its factorization.

631160261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108762.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 631160261 is about 25122.9031164792. The cubic root of 631160261 is about 857.7878340254.

The spelling of 631160261 in words is "six hundred thirty-one million, one hundred sixty thousand, two hundred sixty-one".