131031100043 has 2 divisors, whose sum is σ = 131031100044. Its totient is φ = 131031100042.

The previous prime is 131031100037. The next prime is 131031100093. The reversal of 131031100043 is 340001130131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131031100043 - 2²² = 131026905739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 131031099994 and 131031100030.

It is not a weakly prime, because it can be changed into another prime (131031100033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65515550021 + 65515550022.

It is an arithmetic number, because the mean of its divisors is an integer number (65515550022).

Almost surely, 2^131031100043 is an apocalyptic number.

131031100043 is a deficient number, since it is larger than the sum of its proper divisors (1).

131031100043 is an equidigital number, since it uses as much as digits as its factorization.

131031100043 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 17.

Adding to 131031100043 its reverse (340001130131), we get a palindrome (471032230174).

The spelling of 131031100043 in words is "one hundred thirty-one billion, thirty-one million, one hundred thousand, forty-three".