213292993 has 4 divisors (see below), whose sum is σ = 224518960. Its totient is φ = 202067028.

The previous prime is 213292991. The next prime is 213292997. The reversal of 213292993 is 399292312.

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.

It is a cyclic number.

It is not a de Polignac number, because 213292993 - 2¹ = 213292991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213292991) 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, 5612955 + ... + 5612992.

It is an arithmetic number, because the mean of its divisors is an integer number (56129740).

Almost surely, 2^213292993 is an apocalyptic number.

It is an amenable number.

213292993 is a deficient number, since it is larger than the sum of its proper divisors (11225967).

213292993 is a wasteful number, since it uses less digits than its factorization.

213292993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11225966.

The product of its digits is 52488, while the sum is 40.

The square root of 213292993 is about 14604.5538446061. The cubic root of 213292993 is about 597.4829677165.

The spelling of 213292993 in words is "two hundred thirteen million, two hundred ninety-two thousand, nine hundred ninety-three".