213862073 has 4 divisors (see below), whose sum is σ = 223160448. Its totient is φ = 204563700.

The previous prime is 213862039. The next prime is 213862097. The reversal of 213862073 is 370268312.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 213862073 - 2⁶ = 213862009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213862003) 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 3 ways as a sum of consecutive naturals, for example, 4649153 + ... + 4649198.

It is an arithmetic number, because the mean of its divisors is an integer number (55790112).

Almost surely, 2^213862073 is an apocalyptic number.

213862073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

213862073 is a deficient number, since it is larger than the sum of its proper divisors (9298375).

213862073 is an equidigital number, since it uses as much as digits as its factorization.

213862073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9298374.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 213862073 is about 14624.0238306699. The cubic root of 213862073 is about 598.0138707013.

The spelling of 213862073 in words is "two hundred thirteen million, eight hundred sixty-two thousand, seventy-three".