38311103991 has 8 divisors (see below), whose sum is σ = 52462052464. Its totient is φ = 24850445760.

The previous prime is 38311103977. The next prime is 38311103993. The reversal of 38311103991 is 19930111383.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38311103991 - 2⁵ = 38311103959 is a prime.

It is a super-2 number, since 2×38311103991² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38311103993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172572430 + ... + 172572651.

It is an arithmetic number, because the mean of its divisors is an integer number (6557756558).

Almost surely, 2^38311103991 is an apocalyptic number.

38311103991 is a deficient number, since it is larger than the sum of its proper divisors (14150948473).

38311103991 is a wasteful number, since it uses less digits than its factorization.

38311103991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345145121.

The product of its (nonzero) digits is 17496, while the sum is 39.

The spelling of 38311103991 in words is "thirty-eight billion, three hundred eleven million, one hundred three thousand, nine hundred ninety-one".