631355413 has 4 divisors (see below), whose sum is σ = 679921228. Its totient is φ = 582789600.

The previous prime is 631355399. The next prime is 631355423. The reversal of 631355413 is 314553136.

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 32182929 + 599172484 = 5673^2 + 24478^2 .

It is a cyclic number.

It is not a de Polignac number, because 631355413 - 2⁵ = 631355381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (631355423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24282888 + ... + 24282913.

It is an arithmetic number, because the mean of its divisors is an integer number (169980307).

Almost surely, 2^631355413 is an apocalyptic number.

It is an amenable number.

631355413 is a deficient number, since it is larger than the sum of its proper divisors (48565815).

631355413 is a wasteful number, since it uses less digits than its factorization.

631355413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48565814.

The product of its digits is 16200, while the sum is 31.

The square root of 631355413 is about 25126.7867623379. The cubic root of 631355413 is about 857.8762330009.

The spelling of 631355413 in words is "six hundred thirty-one million, three hundred fifty-five thousand, four hundred thirteen".