213376891 has 32 divisors (see below), whose sum is σ = 272384000. Its totient is φ = 162642816.

The previous prime is 213376873. The next prime is 213376901. The reversal of 213376891 is 198673312.

It is not a de Polignac number, because 213376891 - 2⁷ = 213376763 is a prime.

It is a super-2 number, since 2×213376891² = 91059395225651762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (213376831) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 427360 + ... + 427858.

It is an arithmetic number, because the mean of its divisors is an integer number (8512000).

Almost surely, 2^213376891 is an apocalyptic number.

213376891 is a deficient number, since it is larger than the sum of its proper divisors (59007109).

213376891 is a wasteful number, since it uses less digits than its factorization.

213376891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its digits is 54432, while the sum is 40.

The square root of 213376891 is about 14607.4258854871. The cubic root of 213376891 is about 597.5612966765.

The spelling of 213376891 in words is "two hundred thirteen million, three hundred seventy-six thousand, eight hundred ninety-one".