213200122031 has 4 divisors (see below), whose sum is σ = 229600131432. Its totient is φ = 196800112632.

The previous prime is 213200122013. The next prime is 213200122073. The reversal of 213200122031 is 130221002312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213200122031 is a prime.

It is a super-2 number, since 2×213200122031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213200122081) 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, 8200004681 + ... + 8200004706.

It is an arithmetic number, because the mean of its divisors is an integer number (57400032858).

Almost surely, 2^213200122031 is an apocalyptic number.

213200122031 is a deficient number, since it is larger than the sum of its proper divisors (16400009401).

213200122031 is a wasteful number, since it uses less digits than its factorization.

213200122031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16400009400.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 213200122031 its reverse (130221002312), we get a palindrome (343421124343).

The spelling of 213200122031 in words is "two hundred thirteen billion, two hundred million, one hundred twenty-two thousand, thirty-one".