100431331111 has 2 divisors, whose sum is σ = 100431331112. Its totient is φ = 100431331110.

The previous prime is 100431331079. The next prime is 100431331139. The reversal of 100431331111 is 111133134001.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100431331111 - 2⁵ = 100431331079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100431335111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50215665555 + 50215665556.

It is an arithmetic number, because the mean of its divisors is an integer number (50215665556).

Almost surely, 2^100431331111 is an apocalyptic number.

100431331111 is a deficient number, since it is larger than the sum of its proper divisors (1).

100431331111 is an equidigital number, since it uses as much as digits as its factorization.

100431331111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 100431331111 its reverse (111133134001), we get a palindrome (211564465112).

The spelling of 100431331111 in words is "one hundred billion, four hundred thirty-one million, three hundred thirty-one thousand, one hundred eleven".