213130331023 has 4 divisors (see below), whose sum is σ = 213157562040. Its totient is φ = 213103100008.

The previous prime is 213130331003. The next prime is 213130331047. The reversal of 213130331023 is 320133031312.

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 213130331023 - 2⁵ = 213130330991 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213130330985 and 213130331003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213130331003) 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, 13603765 + ... + 13619422.

It is an arithmetic number, because the mean of its divisors is an integer number (53289390510).

Almost surely, 2^213130331023 is an apocalyptic number.

213130331023 is a deficient number, since it is larger than the sum of its proper divisors (27231017).

213130331023 is an equidigital number, since it uses as much as digits as its factorization.

213130331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27231016.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 213130331023 its reverse (320133031312), we get a palindrome (533263362335).

The spelling of 213130331023 in words is "two hundred thirteen billion, one hundred thirty million, three hundred thirty-one thousand, twenty-three".