100131523 has 2 divisors, whose sum is σ = 100131524. Its totient is φ = 100131522.

The previous prime is 100131487. The next prime is 100131529. The reversal of 100131523 is 325131001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100131523 - 2⁹ = 100131011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 100131497 and 100131506.

It is not a weakly prime, because it can be changed into another prime (100131529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50065761 + 50065762.

It is an arithmetic number, because the mean of its divisors is an integer number (50065762).

Almost surely, 2^100131523 is an apocalyptic number.

100131523 is a deficient number, since it is larger than the sum of its proper divisors (1).

100131523 is an equidigital number, since it uses as much as digits as its factorization.

100131523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 16.

The square root of 100131523 is about 10006.5739891333. The cubic root of 100131523 is about 464.3622861096.

Adding to 100131523 its reverse (325131001), we get a palindrome (425262524).

The spelling of 100131523 in words is "one hundred million, one hundred thirty-one thousand, five hundred twenty-three".