63431 has 4 divisors (see below), whose sum is σ = 64032. Its totient is φ = 62832.

The previous prime is 63421. The next prime is 63439. The reversal of 63431 is 13436.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 63431 - 2⁶ = 63367 is a prime.

It is a super-2 number, since 2×63431² = 8046983522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95 + ... + 368.

It is an arithmetic number, because the mean of its divisors is an integer number (16008).

2⁶³⁴³¹ is an apocalyptic number.

63431 is a deficient number, since it is larger than the sum of its proper divisors (601).

63431 is a wasteful number, since it uses less digits than its factorization.

63431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600.

The product of its digits is 216, while the sum is 17.

The square root of 63431 is about 251.8551170812. The cubic root of 63431 is about 39.8811052846.

Adding to 63431 its reverse (13436), we get a palindrome (76867).

It can be divided in two parts, 63 and 431, that added together give a palindrome (494).

The spelling of 63431 in words is "sixty-three thousand, four hundred thirty-one".