213120211031 has 8 divisors (see below), whose sum is σ = 262301798304. Its totient is φ = 168622584480.

The previous prime is 213120211001. The next prime is 213120211033. The reversal of 213120211031 is 130112021312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 213120211031 - 2³⁴ = 195940341847 is a prime.

It is a super-2 number, since 2×213120211031² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120211033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1170990080 + ... + 1170990261.

It is an arithmetic number, because the mean of its divisors is an integer number (32787724788).

Almost surely, 2^213120211031 is an apocalyptic number.

213120211031 is a deficient number, since it is larger than the sum of its proper divisors (49181587273).

213120211031 is a wasteful number, since it uses less digits than its factorization.

213120211031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2341980361.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 213120211031 its reverse (130112021312), we get a palindrome (343232232343).

The spelling of 213120211031 in words is "two hundred thirteen billion, one hundred twenty million, two hundred eleven thousand, thirty-one".