100400313405 has 16 divisors (see below), whose sum is σ = 183589144704. Its totient is φ = 45897286080.

The previous prime is 100400313373. The next prime is 100400313421. The reversal of 100400313405 is 504313004001.

It is not a de Polignac number, because 100400313405 - 2⁵ = 100400313373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 478096626 + ... + 478096835.

It is an arithmetic number, because the mean of its divisors is an integer number (11474321544).

Almost surely, 2^100400313405 is an apocalyptic number.

100400313405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

100400313405 is a deficient number, since it is larger than the sum of its proper divisors (83188831299).

100400313405 is an equidigital number, since it uses as much as digits as its factorization.

100400313405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956193476.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 100400313405 its reverse (504313004001), we get a palindrome (604713317406).

The spelling of 100400313405 in words is "one hundred billion, four hundred million, three hundred thirteen thousand, four hundred five".