100420113431 has 16 divisors (see below), whose sum is σ = 110598670080. Its totient is φ = 90416863680.

The previous prime is 100420113377. The next prime is 100420113461. The reversal of 100420113431 is 134311024001.

It is a de Polignac number, because none of the positive numbers 2^k-100420113431 is a prime.

It is a super-2 number, since 2×100420113431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100420113461) 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, 7477835 + ... + 7491251.

It is an arithmetic number, because the mean of its divisors is an integer number (6912416880).

Almost surely, 2^100420113431 is an apocalyptic number.

100420113431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100420113431 is a deficient number, since it is larger than the sum of its proper divisors (10178556649).

100420113431 is a wasteful number, since it uses less digits than its factorization.

100420113431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19894.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 100420113431 its reverse (134311024001), we get a palindrome (234731137432).

The spelling of 100420113431 in words is "one hundred billion, four hundred twenty million, one hundred thirteen thousand, four hundred thirty-one".