103957013 has 4 divisors (see below), whose sum is σ = 106766700. Its totient is φ = 101147328.

The previous prime is 103956991. The next prime is 103957019. The reversal of 103957013 is 310759301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310759301 = 491 ⋅632911.

It can be written as a sum of positive squares in 2 ways, for example, as 49463089 + 54493924 = 7033^2 + 7382^2 .

It is a cyclic number.

It is not a de Polignac number, because 103957013 - 2¹⁶ = 103891477 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103957019) 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, 1404788 + ... + 1404861.

It is an arithmetic number, because the mean of its divisors is an integer number (26691675).

Almost surely, 2^103957013 is an apocalyptic number.

It is an amenable number.

103957013 is a deficient number, since it is larger than the sum of its proper divisors (2809687).

103957013 is an equidigital number, since it uses as much as digits as its factorization.

103957013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809686.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 103957013 is about 10195.9311982771. The cubic root of 103957013 is about 470.2021357790.

The spelling of 103957013 in words is "one hundred three million, nine hundred fifty-seven thousand, thirteen".