100155131 has 2 divisors, whose sum is σ = 100155132. Its totient is φ = 100155130.

The previous prime is 100155089. The next prime is 100155149. The reversal of 100155131 is 131551001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 100155131 - 2¹⁰ = 100154107 is a prime.

It is a super-2 number, since 2×100155131² = 20062100531254322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100155191) 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, 50077565 + 50077566.

It is an arithmetic number, because the mean of its divisors is an integer number (50077566).

Almost surely, 2^100155131 is an apocalyptic number.

100155131 is a deficient number, since it is larger than the sum of its proper divisors (1).

100155131 is an equidigital number, since it uses as much as digits as its factorization.

100155131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75, while the sum is 17.

The square root of 100155131 is about 10007.7535441277. The cubic root of 100155131 is about 464.3987774598.

The spelling of 100155131 in words is "one hundred million, one hundred fifty-five thousand, one hundred thirty-one".