100420511431 has 2 divisors, whose sum is σ = 100420511432. Its totient is φ = 100420511430.

The previous prime is 100420511423. The next prime is 100420511441. The reversal of 100420511431 is 134115024001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100420511431 - 2³ = 100420511423 is a prime.

It is a super-2 number, since 2×100420511431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100420511441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50210255715 + 50210255716.

It is an arithmetic number, because the mean of its divisors is an integer number (50210255716).

Almost surely, 2^100420511431 is an apocalyptic number.

100420511431 is a deficient number, since it is larger than the sum of its proper divisors (1).

100420511431 is an equidigital number, since it uses as much as digits as its factorization.

100420511431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 100420511431 its reverse (134115024001), we get a palindrome (234535535432).

The spelling of 100420511431 in words is "one hundred billion, four hundred twenty million, five hundred eleven thousand, four hundred thirty-one".