100939213 has 4 divisors (see below), whose sum is σ = 100971360. Its totient is φ = 100907068.

The previous prime is 100939211. The next prime is 100939243. The reversal of 100939213 is 312939001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312939001 = 773 ⋅404837.

It is a cyclic number.

It is not a de Polignac number, because 100939213 - 2¹ = 100939211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100939211) 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, 10783 + ... + 17836.

It is an arithmetic number, because the mean of its divisors is an integer number (25242840).

Almost surely, 2^100939213 is an apocalyptic number.

It is an amenable number.

100939213 is a deficient number, since it is larger than the sum of its proper divisors (32147).

100939213 is an equidigital number, since it uses as much as digits as its factorization.

100939213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32146.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 100939213 is about 10046.8508996601. The cubic root of 100939213 is about 465.6075044280.

It can be divided in two parts, 10093 and 9213, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 100939213 in words is "one hundred million, nine hundred thirty-nine thousand, two hundred thirteen".