355312213 has 4 divisors (see below), whose sum is σ = 356455008. Its totient is φ = 354169420.

The previous prime is 355312193. The next prime is 355312229. The reversal of 355312213 is 312213553.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 312213553 = 443 ⋅704771.

It is a cyclic number.

It is not a de Polignac number, because 355312213 - 2⁹ = 355311701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (355312253) 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, 570931 + ... + 571552.

It is an arithmetic number, because the mean of its divisors is an integer number (89113752).

Almost surely, 2^355312213 is an apocalyptic number.

It is an amenable number.

355312213 is a deficient number, since it is larger than the sum of its proper divisors (1142795).

355312213 is a wasteful number, since it uses less digits than its factorization.

355312213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142794.

The product of its digits is 2700, while the sum is 25.

The square root of 355312213 is about 18849.7271333035. The cubic root of 355312213 is about 708.2773904546.

Adding to 355312213 its reverse (312213553), we get a palindrome (667525766).

The spelling of 355312213 in words is "three hundred fifty-five million, three hundred twelve thousand, two hundred thirteen".