8103931 has 4 divisors (see below), whose sum is σ = 8840664. Its totient is φ = 7367200.

The previous prime is 8103923. The next prime is 8103941. The reversal of 8103931 is 1393018.

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

It is a cyclic number.

It is not a de Polignac number, because 8103931 - 2³ = 8103923 is a prime.

It is a super-2 number, since 2×8103931² = 131347395305522, 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 = 8103896 and 8103905.

It is not an unprimeable number, because it can be changed into a prime (8103941) 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, 368350 + ... + 368371.

It is an arithmetic number, because the mean of its divisors is an integer number (2210166).

Almost surely, 2^8103931 is an apocalyptic number.

8103931 is a deficient number, since it is larger than the sum of its proper divisors (736733).

8103931 is a wasteful number, since it uses less digits than its factorization.

8103931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736732.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 8103931 is about 2846.7404166871. The cubic root of 8103931 is about 200.8623679301.

Adding to 8103931 its reverse (1393018), we get a palindrome (9496949).

The spelling of 8103931 in words is "eight million, one hundred three thousand, nine hundred thirty-one".