103813177921 has 4 divisors (see below), whose sum is σ = 107161990144. Its totient is φ = 100464365700.

The previous prime is 103813177903. The next prime is 103813177957. The reversal of 103813177921 is 129771318301.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 103813177921 - 2³³ = 95223243329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103813177961) 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, 1674406065 + ... + 1674406126.

It is an arithmetic number, because the mean of its divisors is an integer number (26790497536).

Almost surely, 2^103813177921 is an apocalyptic number.

It is an amenable number.

103813177921 is a deficient number, since it is larger than the sum of its proper divisors (3348812223).

103813177921 is an equidigital number, since it uses as much as digits as its factorization.

103813177921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3348812222.

The product of its (nonzero) digits is 63504, while the sum is 43.

The spelling of 103813177921 in words is "one hundred three billion, eight hundred thirteen million, one hundred seventy-seven thousand, nine hundred twenty-one".