204315154 has 4 divisors (see below), whose sum is σ = 306472734. Its totient is φ = 102157576.

The previous prime is 204315143. The next prime is 204315173. The reversal of 204315154 is 451513402.

It is a happy number.

204315154 is digitally balanced in base 3, 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 can be written as a sum of positive squares in only one way, i.e., 193849929 + 10465225 = 13923^2 + 3235^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51078787 + ... + 51078790.

Almost surely, 2^204315154 is an apocalyptic number.

204315154 is a deficient number, since it is larger than the sum of its proper divisors (102157580).

204315154 is a wasteful number, since it uses less digits than its factorization.

204315154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102157579.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 204315154 is about 14293.8851961249. The cubic root of 204315154 is about 588.9795191209.

Adding to 204315154 its reverse (451513402), we get a palindrome (655828556).

The spelling of 204315154 in words is "two hundred four million, three hundred fifteen thousand, one hundred fifty-four".