631432 has 8 divisors (see below), whose sum is σ = 1183950. Its totient is φ = 315712.

The previous prime is 631429. The next prime is 631453. The reversal of 631432 is 234136.

631432 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

It can be written as a sum of positive squares in only one way, i.e., 367236 + 264196 = 606^2 + 514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39457 + ... + 39472.

2⁶³¹⁴³² is an apocalyptic number.

It is an amenable number.

631432 is a deficient number, since it is larger than the sum of its proper divisors (552518).

631432 is a wasteful number, since it uses less digits than its factorization.

631432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78935 (or 78931 counting only the distinct ones).

The product of its digits is 432, while the sum is 19.

The square root of 631432 is about 794.6269565022. The cubic root of 631432 is about 85.7910920019.

Adding to 631432 its reverse (234136), we get a palindrome (865568).

The spelling of 631432 in words is "six hundred thirty-one thousand, four hundred thirty-two".