213377369 has 6 divisors (see below), whose sum is σ = 214537050. Its totient is φ = 212223920.

The previous prime is 213377257. The next prime is 213377377. The reversal of 213377369 is 963773312.

It can be written as a sum of positive squares in only one way, i.e., 168688144 + 44689225 = 12988^2 + 6685^2 .

It is not a de Polignac number, because 213377369 - 2²⁴ = 196600153 is a prime.

It is a super-2 number, since 2×213377369² = 91059803202724322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213377569) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33557 + ... + 39405.

It is an arithmetic number, because the mean of its divisors is an integer number (35756175).

Almost surely, 2^213377369 is an apocalyptic number.

It is an amenable number.

213377369 is a deficient number, since it is larger than the sum of its proper divisors (1159681).

213377369 is an frugal number, since it uses more digits than its factorization.

213377369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6231 (or 6040 counting only the distinct ones).

The product of its digits is 142884, while the sum is 41.

The square root of 213377369 is about 14607.4422470192. The cubic root of 213377369 is about 597.5617428887.

The spelling of 213377369 in words is "two hundred thirteen million, three hundred seventy-seven thousand, three hundred sixty-nine".