213120330211231 has 4 divisors (see below), whose sum is σ = 215075562598600. Its totient is φ = 211165097823864.

The previous prime is 213120330211223. The next prime is 213120330211249. The reversal of 213120330211231 is 132112033021312.

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 213120330211231 - 2³ = 213120330211223 is a prime.

It is a super-2 number, since 2×213120330211231² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213120330211196 and 213120330211205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120330211291) 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, 977616193521 + ... + 977616193738.

It is an arithmetic number, because the mean of its divisors is an integer number (53768890649650).

Almost surely, 2^{213120330211231} is an apocalyptic number.

213120330211231 is a deficient number, since it is larger than the sum of its proper divisors (1955232387369).

213120330211231 is a wasteful number, since it uses less digits than its factorization.

213120330211231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955232387368.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 213120330211231 its reverse (132112033021312), we get a palindrome (345232363232543).

The spelling of 213120330211231 in words is "two hundred thirteen trillion, one hundred twenty billion, three hundred thirty million, two hundred eleven thousand, two hundred thirty-one".