213342903 has 10 divisors (see below), whose sum is σ = 318697544. Its totient is φ = 142228548.

The previous prime is 213342893. The next prime is 213342919. The reversal of 213342903 is 309243312.

It is a happy number.

It is not a de Polignac number, because 213342903 - 2²⁴ = 196565687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213342953) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1316851 + ... + 1317012.

Almost surely, 2^213342903 is an apocalyptic number.

213342903 is a deficient number, since it is larger than the sum of its proper divisors (105354641).

213342903 is an equidigital number, since it uses as much as digits as its factorization.

213342903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633875 (or 2633866 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 213342903 is about 14606.2624582745. The cubic root of 213342903 is about 597.5295672302.

The spelling of 213342903 in words is "two hundred thirteen million, three hundred forty-two thousand, nine hundred three".