63131903 has 4 divisors (see below), whose sum is σ = 65168448. Its totient is φ = 61095360.

The previous prime is 63131899. The next prime is 63131909. The reversal of 63131903 is 30913136.

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 63131903 - 2² = 63131899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63131909) 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, 1018226 + ... + 1018287.

It is an arithmetic number, because the mean of its divisors is an integer number (16292112).

Almost surely, 2^63131903 is an apocalyptic number.

63131903 is a deficient number, since it is larger than the sum of its proper divisors (2036545).

63131903 is a wasteful number, since it uses less digits than its factorization.

63131903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036544.

The product of its (nonzero) digits is 1458, while the sum is 26.

The square root of 63131903 is about 7945.5586965298. The cubic root of 63131903 is about 398.1832254013.

The spelling of 63131903 in words is "sixty-three million, one hundred thirty-one thousand, nine hundred three".