213694023 has 4 divisors (see below), whose sum is σ = 284925368. Its totient is φ = 142462680.

The previous prime is 213694003. The next prime is 213694027. The reversal of 213694023 is 320496312.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 213694023 - 2¹³ = 213685831 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 (213694027) 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, 35615668 + ... + 35615673.

It is an arithmetic number, because the mean of its divisors is an integer number (71231342).

Almost surely, 2^213694023 is an apocalyptic number.

213694023 is a deficient number, since it is larger than the sum of its proper divisors (71231345).

213694023 is an equidigital number, since it uses as much as digits as its factorization.

213694023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71231344.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 213694023 is about 14618.2770188555. The cubic root of 213694023 is about 597.8571925147.

The spelling of 213694023 in words is "two hundred thirteen million, six hundred ninety-four thousand, twenty-three".