100858031 has 4 divisors (see below), whose sum is σ = 102073272. Its totient is φ = 99642792.

The previous prime is 100858019. The next prime is 100858049. The reversal of 100858031 is 130858001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 100858031 - 2²⁶ = 33749167 is a prime.

It is a super-2 number, since 2×100858031² = 20344684834393922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100858231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607496 + ... + 607661.

It is an arithmetic number, because the mean of its divisors is an integer number (25518318).

Almost surely, 2^100858031 is an apocalyptic number.

100858031 is a deficient number, since it is larger than the sum of its proper divisors (1215241).

100858031 is an equidigital number, since it uses as much as digits as its factorization.

100858031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215240.

The product of its (nonzero) digits is 960, while the sum is 26.

The square root of 100858031 is about 10042.8099155565. The cubic root of 100858031 is about 465.4826468188.

The spelling of 100858031 in words is "one hundred million, eight hundred fifty-eight thousand, thirty-one".