355212811 has 4 divisors (see below), whose sum is σ = 356998000. Its totient is φ = 353427624.

The previous prime is 355212779. The next prime is 355212829. The reversal of 355212811 is 118212553.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 118212553 = 41 ⋅2883233.

It is a cyclic number.

It is not a de Polignac number, because 355212811 - 2⁵ = 355212779 is a prime.

It is a super-2 number, since 2×355212811² = 252352282197043442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 355212811.

It is not an unprimeable number, because it can be changed into a prime (355213811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892296 + ... + 892693.

It is an arithmetic number, because the mean of its divisors is an integer number (89249500).

Almost surely, 2^355212811 is an apocalyptic number.

355212811 is a deficient number, since it is larger than the sum of its proper divisors (1785189).

355212811 is a wasteful number, since it uses less digits than its factorization.

355212811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785188.

The product of its digits is 2400, while the sum is 28.

The square root of 355212811 is about 18847.0902528746. The cubic root of 355212811 is about 708.2113351629.

The spelling of 355212811 in words is "three hundred fifty-five million, two hundred twelve thousand, eight hundred eleven".