213837273 has 32 divisors (see below), whose sum is σ = 342316800. Its totient is φ = 131148288.

The previous prime is 213837259. The next prime is 213837277. The reversal of 213837273 is 372738312.

213837273 is a `hidden beast` number, since 2 + 1 + 383 + 7 + 273 = 666.

It is not a de Polignac number, because 213837273 - 2¹⁸ = 213575129 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (213837277) 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, 125161 + ... + 126857.

It is an arithmetic number, because the mean of its divisors is an integer number (10697400).

Almost surely, 2^213837273 is an apocalyptic number.

It is an amenable number.

213837273 is a deficient number, since it is larger than the sum of its proper divisors (128479527).

213837273 is a wasteful number, since it uses less digits than its factorization.

213837273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2078 (or 2072 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 213837273 is about 14623.1758862430. The cubic root of 213837273 is about 597.9907540619.

The spelling of 213837273 in words is "two hundred thirteen million, eight hundred thirty-seven thousand, two hundred seventy-three".