140232321 has 12 divisors (see below), whose sum is σ = 205991760. Its totient is φ = 91903320.

The previous prime is 140232319. The next prime is 140232373. The reversal of 140232321 is 123232041.

It is not a de Polignac number, because 140232321 - 2¹ = 140232319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140232294 and 140232303.

It is not an unprimeable number, because it can be changed into a prime (140239321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 131515 + ... + 132576.

It is an arithmetic number, because the mean of its divisors is an integer number (17165980).

Almost surely, 2^140232321 is an apocalyptic number.

It is an amenable number.

140232321 is a deficient number, since it is larger than the sum of its proper divisors (65759439).

140232321 is a wasteful number, since it uses less digits than its factorization.

140232321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264156 (or 264153 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 140232321 is about 11841.9728508387. The cubic root of 140232321 is about 519.5364717955.

Adding to 140232321 its reverse (123232041), we get a palindrome (263464362).

The spelling of 140232321 in words is "one hundred forty million, two hundred thirty-two thousand, three hundred twenty-one".