100045831 has 2 divisors, whose sum is σ = 100045832. Its totient is φ = 100045830.

The previous prime is 100045823. The next prime is 100045873. The reversal of 100045831 is 138540001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 100045831 - 2³ = 100045823 is a prime.

It is a super-2 number, since 2×100045831² = 20018336600961122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100045531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50022915 + 50022916.

It is an arithmetic number, because the mean of its divisors is an integer number (50022916).

Almost surely, 2^100045831 is an apocalyptic number.

100045831 is a deficient number, since it is larger than the sum of its proper divisors (1).

100045831 is an equidigital number, since it uses as much as digits as its factorization.

100045831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 100045831 is about 10002.2912875001. The cubic root of 100045831 is about 464.2297820838.

Adding to 100045831 its reverse (138540001), we get a palindrome (238585832).

The spelling of 100045831 in words is "one hundred million, forty-five thousand, eight hundred thirty-one".