213422451 has 16 divisors (see below), whose sum is σ = 323930880. Its totient is φ = 123722720.

The previous prime is 213422431. The next prime is 213422453. The reversal of 213422451 is 154224312.

213422451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213422451 - 2⁷ = 213422323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213422453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139836 + ... + 141353.

It is an arithmetic number, because the mean of its divisors is an integer number (20245680).

Almost surely, 2^213422451 is an apocalyptic number.

213422451 is a deficient number, since it is larger than the sum of its proper divisors (110508429).

213422451 is a wasteful number, since it uses less digits than its factorization.

213422451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281226.

The product of its digits is 1920, while the sum is 24.

The square root of 213422451 is about 14608.9852830373. The cubic root of 213422451 is about 597.6038238610.

Adding to 213422451 its reverse (154224312), we get a palindrome (367646763).

The spelling of 213422451 in words is "two hundred thirteen million, four hundred twenty-two thousand, four hundred fifty-one".