213130432031123 has 4 divisors (see below), whose sum is σ = 214757381894088. Its totient is φ = 211503482168160.

The previous prime is 213130432031117. The next prime is 213130432031173. The reversal of 213130432031123 is 321130234031312.

213130432031123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 213130432031123 - 2¹² = 213130432027027 is a prime.

It is a super-2 number, since 2×213130432031123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213130432031173) 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, 813474931286 + ... + 813474931547.

It is an arithmetic number, because the mean of its divisors is an integer number (53689345473522).

Almost surely, 2^{213130432031123} is an apocalyptic number.

213130432031123 is a deficient number, since it is larger than the sum of its proper divisors (1626949862965).

213130432031123 is a wasteful number, since it uses less digits than its factorization.

213130432031123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1626949862964.

The product of its (nonzero) digits is 7776, while the sum is 29.

Adding to 213130432031123 its reverse (321130234031312), we get a palindrome (534260666062435).

The spelling of 213130432031123 in words is "two hundred thirteen trillion, one hundred thirty billion, four hundred thirty-two million, thirty-one thousand, one hundred twenty-three".