63131339 has 4 divisors (see below), whose sum is σ = 63169224. Its totient is φ = 63093456.

The previous prime is 63131329. The next prime is 63131399. The reversal of 63131339 is 93313136.

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 63131339 - 2¹⁶ = 63065803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63131329) 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, 16322 + ... + 19815.

It is an arithmetic number, because the mean of its divisors is an integer number (15792306).

Almost surely, 2^63131339 is an apocalyptic number.

63131339 is a deficient number, since it is larger than the sum of its proper divisors (37885).

63131339 is a wasteful number, since it uses less digits than its factorization.

63131339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37884.

The product of its digits is 4374, while the sum is 29.

The square root of 63131339 is about 7945.5232049249. The cubic root of 63131339 is about 398.1820396511.

The spelling of 63131339 in words is "sixty-three million, one hundred thirty-one thousand, three hundred thirty-nine".