213422002423 has 4 divisors (see below), whose sum is σ = 243910859920. Its totient is φ = 182933144928.

The previous prime is 213422002393. The next prime is 213422002459. The reversal of 213422002423 is 324200224312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213422002423 is a prime.

It is a super-2 number, since 2×213422002423² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213422003423) 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, 15244428738 + ... + 15244428751.

It is an arithmetic number, because the mean of its divisors is an integer number (60977714980).

Almost surely, 2^213422002423 is an apocalyptic number.

213422002423 is a deficient number, since it is larger than the sum of its proper divisors (30488857497).

213422002423 is an equidigital number, since it uses as much as digits as its factorization.

213422002423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30488857496.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 213422002423 its reverse (324200224312), we get a palindrome (537622226735).

The spelling of 213422002423 in words is "two hundred thirteen billion, four hundred twenty-two million, two thousand, four hundred twenty-three".