631291452 has 24 divisors (see below), whose sum is σ = 1606924032. Its totient is φ = 191300400.

The previous prime is 631291421. The next prime is 631291469. The reversal of 631291452 is 254192136.

631291452 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2391124 + ... + 2391387.

It is an arithmetic number, because the mean of its divisors is an integer number (66955168).

Almost surely, 2^631291452 is an apocalyptic number.

It is an amenable number.

631291452 is an abundant number, since it is smaller than the sum of its proper divisors (975632580).

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

631291452 is a wasteful number, since it uses less digits than its factorization.

631291452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4782529 (or 4782527 counting only the distinct ones).

The product of its digits is 12960, while the sum is 33.

The square root of 631291452 is about 25125.5139648923. The cubic root of 631291452 is about 857.8472622745.

The spelling of 631291452 in words is "six hundred thirty-one million, two hundred ninety-one thousand, four hundred fifty-two".