100081031 has 2 divisors, whose sum is σ = 100081032. Its totient is φ = 100081030.

The previous prime is 100080997. The next prime is 100081039. The reversal of 100081031 is 130180001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100081031 - 2²² = 95886727 is a prime.

It is a super-2 number, since 2×100081031² = 20032425532045922, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 100080997 and 100081015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100081039) 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, 50040515 + 50040516.

It is an arithmetic number, because the mean of its divisors is an integer number (50040516).

Almost surely, 2^100081031 is an apocalyptic number.

100081031 is a deficient number, since it is larger than the sum of its proper divisors (1).

100081031 is an equidigital number, since it uses as much as digits as its factorization.

100081031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 100081031 is about 10004.0507295795. The cubic root of 100081031 is about 464.2842203750.

The spelling of 100081031 in words is "one hundred million, eighty-one thousand, thirty-one".