13631203963 has 4 divisors (see below), whose sum is σ = 14679758128. Its totient is φ = 12582649800.

The previous prime is 13631203961. The next prime is 13631203969. The reversal of 13631203963 is 36930213631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36930213631 = 449 ⋅82249919.

It is a cyclic number.

It is not a de Polignac number, because 13631203963 - 2¹ = 13631203961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13631203961) 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, 524277063 + ... + 524277088.

It is an arithmetic number, because the mean of its divisors is an integer number (3669939532).

Almost surely, 2^13631203963 is an apocalyptic number.

13631203963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13631203963 is a deficient number, since it is larger than the sum of its proper divisors (1048554165).

13631203963 is a wasteful number, since it uses less digits than its factorization.

13631203963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048554164.

The product of its (nonzero) digits is 52488, while the sum is 37.

The spelling of 13631203963 in words is "thirteen billion, six hundred thirty-one million, two hundred three thousand, nine hundred sixty-three".