213677331623 has 4 divisors (see below), whose sum is σ = 244202664720. Its totient is φ = 183151998528.

The previous prime is 213677331613. The next prime is 213677331643. The reversal of 213677331623 is 326133776312.

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

It is a cyclic number.

It is not a de Polignac number, because 213677331623 - 2⁴ = 213677331607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213677331613) 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, 15262666538 + ... + 15262666551.

It is an arithmetic number, because the mean of its divisors is an integer number (61050666180).

Almost surely, 2^213677331623 is an apocalyptic number.

213677331623 is a deficient number, since it is larger than the sum of its proper divisors (30525333097).

213677331623 is an equidigital number, since it uses as much as digits as its factorization.

213677331623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30525333096.

The product of its digits is 571536, while the sum is 44.

The spelling of 213677331623 in words is "two hundred thirteen billion, six hundred seventy-seven million, three hundred thirty-one thousand, six hundred twenty-three".