63413531 has 4 divisors (see below), whose sum is σ = 63764064. Its totient is φ = 63063000.

The previous prime is 63413527. The next prime is 63413543. The reversal of 63413531 is 13531436.

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 63413531 - 2² = 63413527 is a prime.

It is a super-2 number, since 2×63413531² = 8042551827775922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63413531.

It is not an unprimeable number, because it can be changed into a prime (63413501) 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, 174995 + ... + 175356.

It is an arithmetic number, because the mean of its divisors is an integer number (15941016).

Almost surely, 2^63413531 is an apocalyptic number.

63413531 is a deficient number, since it is larger than the sum of its proper divisors (350533).

63413531 is a wasteful number, since it uses less digits than its factorization.

63413531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350532.

The product of its digits is 3240, while the sum is 26.

The square root of 63413531 is about 7963.2613293801. The cubic root of 63413531 is about 398.7744384153.

Adding to 63413531 its reverse (13531436), we get a palindrome (76944967).

The spelling of 63413531 in words is "sixty-three million, four hundred thirteen thousand, five hundred thirty-one".