103912131 has 4 divisors (see below), whose sum is σ = 138549512. Its totient is φ = 69274752.

The previous prime is 103912117. The next prime is 103912141. The reversal of 103912131 is 131219301.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 103912131 - 2¹⁰ = 103911107 is a prime.

It is a super-2 number, since 2×103912131² = 21595461937922322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 103912098 and 103912107.

It is not an unprimeable number, because it can be changed into a prime (103912111) 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, 17318686 + ... + 17318691.

It is an arithmetic number, because the mean of its divisors is an integer number (34637378).

Almost surely, 2^103912131 is an apocalyptic number.

103912131 is a deficient number, since it is larger than the sum of its proper divisors (34637381).

103912131 is an equidigital number, since it uses as much as digits as its factorization.

103912131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34637380.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 103912131 is about 10193.7299846523. The cubic root of 103912131 is about 470.1344582860.

The spelling of 103912131 in words is "one hundred three million, nine hundred twelve thousand, one hundred thirty-one".