213103239 has 16 divisors (see below), whose sum is σ = 292706400. Its totient is φ = 137808000.

The previous prime is 213103237. The next prime is 213103249. The reversal of 213103239 is 932301312.

It is not a de Polignac number, because 213103239 - 2¹ = 213103237 is a prime.

It is a super-2 number, since 2×213103239² = 90825980944582242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213103237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35989 + ... + 41489.

It is an arithmetic number, because the mean of its divisors is an integer number (18294150).

Almost surely, 2^213103239 is an apocalyptic number.

213103239 is a deficient number, since it is larger than the sum of its proper divisors (79603161).

213103239 is a wasteful number, since it uses less digits than its factorization.

213103239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5890.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 213103239 is about 14598.0560007146. The cubic root of 213103239 is about 597.3057335451.

The spelling of 213103239 in words is "two hundred thirteen million, one hundred three thousand, two hundred thirty-nine".