213322154 has 24 divisors (see below), whose sum is σ = 342372420. Its totient is φ = 99340416.

The previous prime is 213322147. The next prime is 213322159. The reversal of 213322154 is 451223312.

213322154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 213306025 + 16129 = 14605^2 + 127^2 .

It is not an unprimeable number, because it can be changed into a prime (213322159) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 548192 + ... + 548580.

Almost surely, 2^213322154 is an apocalyptic number.

213322154 is a deficient number, since it is larger than the sum of its proper divisors (129050266).

213322154 is a wasteful number, since it uses less digits than its factorization.

213322154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662 (or 535 counting only the distinct ones).

The product of its digits is 1440, while the sum is 23.

The square root of 213322154 is about 14605.5521634754. The cubic root of 213322154 is about 597.5101953758.

Adding to 213322154 its reverse (451223312), we get a palindrome (664545466).

The spelling of 213322154 in words is "two hundred thirteen million, three hundred twenty-two thousand, one hundred fifty-four".