695431631 has 4 divisors (see below), whose sum is σ = 736339392. Its totient is φ = 654523872.

The previous prime is 695431621. The next prime is 695431669. The reversal of 695431631 is 136134596.

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

It is a cyclic number.

It is not a de Polignac number, because 695431631 - 2⁶ = 695431567 is a prime.

It is a super-2 number, since 2×695431631² = 967250306790640322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (695431621) 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, 20453855 + ... + 20453888.

It is an arithmetic number, because the mean of its divisors is an integer number (184084848).

Almost surely, 2^695431631 is an apocalyptic number.

695431631 is a deficient number, since it is larger than the sum of its proper divisors (40907761).

695431631 is a wasteful number, since it uses less digits than its factorization.

695431631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40907760.

The product of its digits is 58320, while the sum is 38.

The square root of 695431631 is about 26371.0377308137. The cubic root of 695431631 is about 885.9682258748.

The spelling of 695431631 in words is "six hundred ninety-five million, four hundred thirty-one thousand, six hundred thirty-one".