100711990 has 16 divisors (see below), whose sum is σ = 185703840. Its totient is φ = 39302080.

The previous prime is 100711987. The next prime is 100712021. The reversal of 100711990 is 99117001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122410 + ... + 123229.

It is an arithmetic number, because the mean of its divisors is an integer number (11606490).

Almost surely, 2^100711990 is an apocalyptic number.

100711990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

100711990 is a deficient number, since it is larger than the sum of its proper divisors (84991850).

100711990 is a wasteful number, since it uses less digits than its factorization.

100711990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245687.

The product of its (nonzero) digits is 567, while the sum is 28.

The square root of 100711990 is about 10035.5363583617. The cubic root of 100711990 is about 465.2578675321.

Adding to 100711990 its reverse (99117001), we get a palindrome (199828991).

The spelling of 100711990 in words is "one hundred million, seven hundred eleven thousand, nine hundred ninety".