140313251 has 4 divisors (see below), whose sum is σ = 151106592. Its totient is φ = 129519912.

The previous prime is 140313247. The next prime is 140313289. The reversal of 140313251 is 152313041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152313041 = 47 ⋅3240703.

It is a cyclic number.

It is not a de Polignac number, because 140313251 - 2² = 140313247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (140313211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5396651 + ... + 5396676.

It is an arithmetic number, because the mean of its divisors is an integer number (37776648).

Almost surely, 2^140313251 is an apocalyptic number.

140313251 is a deficient number, since it is larger than the sum of its proper divisors (10793341).

140313251 is a wasteful number, since it uses less digits than its factorization.

140313251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793340.

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

The square root of 140313251 is about 11845.3894406220. The cubic root of 140313251 is about 519.6363964550.

Adding to 140313251 its reverse (152313041), we get a palindrome (292626292).

The spelling of 140313251 in words is "one hundred forty million, three hundred thirteen thousand, two hundred fifty-one".