100401613 has 4 divisors (see below), whose sum is σ = 108124828. Its totient is φ = 92678400.

The previous prime is 100401611. The next prime is 100401617. The reversal of 100401613 is 316104001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25371369 + 75030244 = 5037^2 + 8662^2 .

It is a cyclic number.

It is not a de Polignac number, because 100401613 - 2¹ = 100401611 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100401611) 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, 3861588 + ... + 3861613.

It is an arithmetic number, because the mean of its divisors is an integer number (27031207).

Almost surely, 2^100401613 is an apocalyptic number.

100401613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

100401613 is a deficient number, since it is larger than the sum of its proper divisors (7723215).

100401613 is an equidigital number, since it uses as much as digits as its factorization.

100401613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7723214.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 100401613 is about 10020.0605287593. The cubic root of 100401613 is about 464.7794275113.

Adding to 100401613 its reverse (316104001), we get a palindrome (416505614).

The spelling of 100401613 in words is "one hundred million, four hundred one thousand, six hundred thirteen".