140232251 has 4 divisors (see below), whose sum is σ = 144755904. Its totient is φ = 135708600.

The previous prime is 140232233. The next prime is 140232263. The reversal of 140232251 is 152232041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140232251 - 2⁶ = 140232187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140232151) 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, 2261780 + ... + 2261841.

It is an arithmetic number, because the mean of its divisors is an integer number (36188976).

Almost surely, 2^140232251 is an apocalyptic number.

140232251 is a deficient number, since it is larger than the sum of its proper divisors (4523653).

140232251 is an equidigital number, since it uses as much as digits as its factorization.

140232251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4523652.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 140232251 is about 11841.9698952497. The cubic root of 140232251 is about 519.5363853495.

Adding to 140232251 its reverse (152232041), we get a palindrome (292464292).

The spelling of 140232251 in words is "one hundred forty million, two hundred thirty-two thousand, two hundred fifty-one".