373281 has 4 divisors (see below), whose sum is σ = 497712. Its totient is φ = 248852.

The previous prime is 373273. The next prime is 373291. The reversal of 373281 is 182373.

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 373281 - 2³ = 373273 is a prime.

It is a super-2 number, since 2×373281² = 278677409922, which contains 22 as substring.

It is an Ulam number.

It is a D-number.

It is a Curzon number.

373281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (373211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62211 + ... + 62216.

It is an arithmetic number, because the mean of its divisors is an integer number (124428).

2³⁷³²⁸¹ is an apocalyptic number.

It is an amenable number.

373281 is a deficient number, since it is larger than the sum of its proper divisors (124431).

373281 is a wasteful number, since it uses less digits than its factorization.

373281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124430.

The product of its digits is 1008, while the sum is 24.

The square root of 373281 is about 610.9672658989. The cubic root of 373281 is about 72.0021218510.

Subtracting from 373281 its product of digits (1008), we obtain a palindrome (372273).

The spelling of 373281 in words is "three hundred seventy-three thousand, two hundred eighty-one".