213120010231 has 2 divisors, whose sum is σ = 213120010232. Its totient is φ = 213120010230.

The previous prime is 213120010219. The next prime is 213120010237. The reversal of 213120010231 is 132010021312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213120010231 - 2¹¹ = 213120008183 is a prime.

It is a super-2 number, since 2×213120010231² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213120010237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106560005115 + 106560005116.

It is an arithmetic number, because the mean of its divisors is an integer number (106560005116).

Almost surely, 2^213120010231 is an apocalyptic number.

213120010231 is a deficient number, since it is larger than the sum of its proper divisors (1).

213120010231 is an equidigital number, since it uses as much as digits as its factorization.

213120010231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 213120010231 its reverse (132010021312), we get a palindrome (345130031543).

The spelling of 213120010231 in words is "two hundred thirteen billion, one hundred twenty million, ten thousand, two hundred thirty-one".