140331251 has 2 divisors, whose sum is σ = 140331252. Its totient is φ = 140331250.

The previous prime is 140331241. The next prime is 140331259. The reversal of 140331251 is 152133041.

140331251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is an emirp because it is prime and its reverse (152133041) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140331251 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140331259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70165625 + 70165626.

It is an arithmetic number, because the mean of its divisors is an integer number (70165626).

Almost surely, 2^140331251 is an apocalyptic number.

140331251 is a deficient number, since it is larger than the sum of its proper divisors (1).

140331251 is an equidigital number, since it uses as much as digits as its factorization.

140331251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 140331251 is about 11846.1492055435. The cubic root of 140331251 is about 519.6586159179.

Adding to 140331251 its reverse (152133041), we get a palindrome (292464292).

The spelling of 140331251 in words is "one hundred forty million, three hundred thirty-one thousand, two hundred fifty-one".