326140243 has 16 divisors (see below), whose sum is σ = 395523072. Its totient is φ = 264852000.

The previous prime is 326140231. The next prime is 326140247. The reversal of 326140243 is 342041623.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326140243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326140247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32353 + ... + 41218.

It is an arithmetic number, because the mean of its divisors is an integer number (24720192).

Almost surely, 2^326140243 is an apocalyptic number.

326140243 is a deficient number, since it is larger than the sum of its proper divisors (69382829).

326140243 is a wasteful number, since it uses less digits than its factorization.

326140243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73626.

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 326140243 is about 18059.3533383674. The cubic root of 326140243 is about 688.3375528055.

Adding to 326140243 its reverse (342041623), we get a palindrome (668181866).

The spelling of 326140243 in words is "three hundred twenty-six million, one hundred forty thousand, two hundred forty-three".