355212138 has 32 divisors (see below), whose sum is σ = 745460352. Its totient is φ = 112622400.

The previous prime is 355212103. The next prime is 355212139. The reversal of 355212138 is 831212553.

355212138 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (355212139) 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, 17868 + ... + 32088.

It is an arithmetic number, because the mean of its divisors is an integer number (23295636).

Almost surely, 2^355212138 is an apocalyptic number.

355212138 is an abundant number, since it is smaller than the sum of its proper divisors (390248214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

355212138 is a wasteful number, since it uses less digits than its factorization.

355212138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14430.

The product of its digits is 7200, while the sum is 30.

The square root of 355212138 is about 18847.0723986512. The cubic root of 355212138 is about 708.2108878944.

The spelling of 355212138 in words is "three hundred fifty-five million, two hundred twelve thousand, one hundred thirty-eight".