213120301231 has 4 divisors (see below), whose sum is σ = 214130350264. Its totient is φ = 212110252200.

The previous prime is 213120301223. The next prime is 213120301267. The reversal of 213120301231 is 132103021312.

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 213120301231 - 2³ = 213120301223 is a prime.

It is a super-2 number, since 2×213120301231² (a number of 23 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 = 213120301199 and 213120301208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213120301211) 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, 505024200 + ... + 505024621.

It is an arithmetic number, because the mean of its divisors is an integer number (53532587566).

Almost surely, 2^213120301231 is an apocalyptic number.

213120301231 is a deficient number, since it is larger than the sum of its proper divisors (1010049033).

213120301231 is a wasteful number, since it uses less digits than its factorization.

213120301231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010049032.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213120301231 its reverse (132103021312), we get a palindrome (345223322543).

The spelling of 213120301231 in words is "two hundred thirteen billion, one hundred twenty million, three hundred one thousand, two hundred thirty-one".