100403131 has 2 divisors, whose sum is σ = 100403132. Its totient is φ = 100403130.

The previous prime is 100403123. The next prime is 100403167. The reversal of 100403131 is 131304001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100403131 - 2³ = 100403123 is a prime.

It is a super-2 number, since 2×100403131² = 20161577429206322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (100403231) 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, 50201565 + 50201566.

It is an arithmetic number, because the mean of its divisors is an integer number (50201566).

Almost surely, 2^100403131 is an apocalyptic number.

100403131 is a deficient number, since it is larger than the sum of its proper divisors (1).

100403131 is an equidigital number, since it uses as much as digits as its factorization.

100403131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 100403131 is about 10020.1362765184. The cubic root of 100403131 is about 464.7817698761.

Adding to 100403131 its reverse (131304001), we get a palindrome (231707132).

The spelling of 100403131 in words is "one hundred million, four hundred three thousand, one hundred thirty-one".