213235854 has 32 divisors (see below), whose sum is σ = 467951904. Its totient is φ = 64371840.

The previous prime is 213235843. The next prime is 213235871. The reversal of 213235854 is 458532312.

It is a super-2 number, since 2×213235854² = 90939058862218632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21657 + ... + 29924.

It is an arithmetic number, because the mean of its divisors is an integer number (14623497).

Almost surely, 2^213235854 is an apocalyptic number.

213235854 is an abundant number, since it is smaller than the sum of its proper divisors (254716050).

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

213235854 is a wasteful number, since it uses less digits than its factorization.

213235854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51652.

The product of its digits is 28800, while the sum is 33.

The square root of 213235854 is about 14602.5975086626. The cubic root of 213235854 is about 597.4296097700.

The spelling of 213235854 in words is "two hundred thirteen million, two hundred thirty-five thousand, eight hundred fifty-four".