105555100031 has 2 divisors, whose sum is σ = 105555100032. Its totient is φ = 105555100030.

The previous prime is 105555100009. The next prime is 105555100069. The reversal of 105555100031 is 130001555501.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105555100031 is a prime.

It is a super-2 number, since 2×105555100031² (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 (105555100631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52777550015 + 52777550016.

It is an arithmetic number, because the mean of its divisors is an integer number (52777550016).

Almost surely, 2^105555100031 is an apocalyptic number.

105555100031 is a deficient number, since it is larger than the sum of its proper divisors (1).

105555100031 is an equidigital number, since it uses as much as digits as its factorization.

105555100031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1875, while the sum is 26.

Adding to 105555100031 its reverse (130001555501), we get a palindrome (235556655532).

The spelling of 105555100031 in words is "one hundred five billion, five hundred fifty-five million, one hundred thousand, thirty-one".