38631403221 has 16 divisors (see below), whose sum is σ = 53752583040. Its totient is φ = 24632435520.

The previous prime is 38631403199. The next prime is 38631403277. The reversal of 38631403221 is 12230413683.

It is not a de Polignac number, because 38631403221 - 2⁹ = 38631402709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38631453221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1593531 + ... + 1617591.

It is an arithmetic number, because the mean of its divisors is an integer number (3359536440).

Almost surely, 2^38631403221 is an apocalyptic number.

It is an amenable number.

38631403221 is a deficient number, since it is larger than the sum of its proper divisors (15121179819).

38631403221 is a wasteful number, since it uses less digits than its factorization.

38631403221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47356.

The product of its (nonzero) digits is 20736, while the sum is 33.

The spelling of 38631403221 in words is "thirty-eight billion, six hundred thirty-one million, four hundred three thousand, two hundred twenty-one".