213520154 has 16 divisors (see below), whose sum is σ = 327888000. Its totient is φ = 104235264.

The previous prime is 213520121. The next prime is 213520159. The reversal of 213520154 is 451025312.

213520154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (213520159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39677 + ... + 44735.

It is an arithmetic number, because the mean of its divisors is an integer number (20493000).

Almost surely, 2^213520154 is an apocalyptic number.

213520154 is a deficient number, since it is larger than the sum of its proper divisors (114367846).

213520154 is a wasteful number, since it uses less digits than its factorization.

213520154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5557.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 213520154 is about 14612.3288356100. The cubic root of 213520154 is about 597.6950026140.

Adding to 213520154 its reverse (451025312), we get a palindrome (664545466).

The spelling of 213520154 in words is "two hundred thirteen million, five hundred twenty thousand, one hundred fifty-four".