631436 has 12 divisors (see below), whose sum is σ = 1190112. Its totient is φ = 291408.

The previous prime is 631429. The next prime is 631453. The reversal of 631436 is 634136.

It is a super-2 number, since 2×631436² = 797422844192, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6020 + ... + 6123.

It is an arithmetic number, because the mean of its divisors is an integer number (99176).

2⁶³¹⁴³⁶ is an apocalyptic number.

It is an amenable number.

631436 is a deficient number, since it is larger than the sum of its proper divisors (558676).

631436 is a wasteful number, since it uses less digits than its factorization.

631436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12160 (or 12158 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 631436 is about 794.6294734025. The cubic root of 631436 is about 85.7912731582.

The spelling of 631436 in words is "six hundred thirty-one thousand, four hundred thirty-six".