631346556 has 24 divisors (see below), whose sum is σ = 1487730384. Its totient is φ = 208364800.

The previous prime is 631346543. The next prime is 631346557. The reversal of 631346556 is 655643136.

It is a happy number.

631346556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×631346556² = 797196947546122272, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631346557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259245 + ... + 261668.

It is an arithmetic number, because the mean of its divisors is an integer number (61988766).

Almost surely, 2^631346556 is an apocalyptic number.

It is an amenable number.

631346556 is an abundant number, since it is smaller than the sum of its proper divisors (856383828).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

631346556 is a wasteful number, since it uses less digits than its factorization.

631346556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521021 (or 521019 counting only the distinct ones).

The product of its digits is 194400, while the sum is 39.

The square root of 631346556 is about 25126.6105155471. The cubic root of 631346556 is about 857.8722213961.

The spelling of 631346556 in words is "six hundred thirty-one million, three hundred forty-six thousand, five hundred fifty-six".