103931691 has 16 divisors (see below), whose sum is σ = 146240640. Its totient is φ = 65473920.

The previous prime is 103931677. The next prime is 103931701. The reversal of 103931691 is 196139301.

It is a happy number.

It is not a de Polignac number, because 103931691 - 2¹⁰ = 103930667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (103931671) 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, 22576 + ... + 26786.

It is an arithmetic number, because the mean of its divisors is an integer number (9140040).

Almost surely, 2^103931691 is an apocalyptic number.

103931691 is a deficient number, since it is larger than the sum of its proper divisors (42308949).

103931691 is a wasteful number, since it uses less digits than its factorization.

103931691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4666.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 103931691 is about 10194.6893527954. The cubic root of 103931691 is about 470.1639551727.

The spelling of 103931691 in words is "one hundred three million, nine hundred thirty-one thousand, six hundred ninety-one".