213085923 has 8 divisors (see below), whose sum is σ = 291793488. Its totient is φ = 138217824.

The previous prime is 213085913. The next prime is 213085927. The reversal of 213085923 is 329580312.

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

It is not a de Polignac number, because 213085923 - 2⁴ = 213085907 is a prime.

It is a super-2 number, since 2×213085923² = 90811221161523858, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213085927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 959736 + ... + 959957.

It is an arithmetic number, because the mean of its divisors is an integer number (36474186).

Almost surely, 2^213085923 is an apocalyptic number.

213085923 is a deficient number, since it is larger than the sum of its proper divisors (78707565).

213085923 is a wasteful number, since it uses less digits than its factorization.

213085923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1919733.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 213085923 is about 14597.4628959967. The cubic root of 213085923 is about 597.2895548043.

The spelling of 213085923 in words is "two hundred thirteen million, eighty-five thousand, nine hundred twenty-three".