213235682937 has 4 divisors (see below), whose sum is σ = 284314243920. Its totient is φ = 142157121956.

The previous prime is 213235682929. The next prime is 213235682951. The reversal of 213235682937 is 739286532312.

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 213235682937 - 2³ = 213235682929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213235682937.

It is not an unprimeable number, because it can be changed into a prime (213235612937) 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, 35539280487 + ... + 35539280492.

It is an arithmetic number, because the mean of its divisors is an integer number (71078560980).

Almost surely, 2^213235682937 is an apocalyptic number.

It is an amenable number.

213235682937 is a deficient number, since it is larger than the sum of its proper divisors (71078560983).

213235682937 is an equidigital number, since it uses as much as digits as its factorization.

213235682937 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71078560982.

The product of its digits is 3265920, while the sum is 51.

The spelling of 213235682937 in words is "two hundred thirteen billion, two hundred thirty-five million, six hundred eighty-two thousand, nine hundred thirty-seven".