213705154 has 8 divisors (see below), whose sum is σ = 345216060. Its totient is φ = 98633136.

The previous prime is 213705131. The next prime is 213705157. The reversal of 213705154 is 451507312.

It is a happy number.

213705154 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 213598225 + 106929 = 14615^2 + 327^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (213705157) 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, 4109689 + ... + 4109740.

Almost surely, 2^213705154 is an apocalyptic number.

213705154 is a deficient number, since it is larger than the sum of its proper divisors (131510906).

213705154 is a wasteful number, since it uses less digits than its factorization.

213705154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8219444.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 213705154 is about 14618.6577359209. The cubic root of 213705154 is about 597.8675728283.

The spelling of 213705154 in words is "two hundred thirteen million, seven hundred five thousand, one hundred fifty-four".