631352407 has 6 divisors (see below), whose sum is σ = 734430408. Its totient is φ = 541159164.

The previous prime is 631352389. The next prime is 631352413. The reversal of 631352407 is 704253136.

631352407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 631352407 - 2¹¹ = 631350359 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 (631352467) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6442323 + ... + 6442420.

It is an arithmetic number, because the mean of its divisors is an integer number (122405068).

Almost surely, 2^631352407 is an apocalyptic number.

631352407 is a deficient number, since it is larger than the sum of its proper divisors (103078001).

631352407 is a wasteful number, since it uses less digits than its factorization.

631352407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12884757 (or 12884750 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 631352407 is about 25126.7269456251. The cubic root of 631352407 is about 857.8748714962.

The spelling of 631352407 in words is "six hundred thirty-one million, three hundred fifty-two thousand, four hundred seven".