633431 has 4 divisors (see below), whose sum is σ = 637392. Its totient is φ = 629472.

The previous prime is 633427. The next prime is 633449. The reversal of 633431 is 134336.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 633431 - 2² = 633427 is a prime.

It is a super-4 number, since 4×633431⁴ (a number of 24 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (633401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730 + ... + 2063.

It is an arithmetic number, because the mean of its divisors is an integer number (159348).

2⁶³³⁴³¹ is an apocalyptic number.

633431 is a deficient number, since it is larger than the sum of its proper divisors (3961).

633431 is a wasteful number, since it uses less digits than its factorization.

633431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960.

The product of its digits is 648, while the sum is 20.

The square root of 633431 is about 795.8837854863. The cubic root of 633431 is about 85.8815296817.

Adding to 633431 its reverse (134336), we get a palindrome (767767).

It can be divided in two parts, 63 and 3431, that multiplied together give a triangular number (216153 = T₆₅₇).

The spelling of 633431 in words is "six hundred thirty-three thousand, four hundred thirty-one".