340140251 has 8 divisors (see below), whose sum is σ = 377352000. Its totient is φ = 303976840.

The previous prime is 340140187. The next prime is 340140287. The reversal of 340140251 is 152041043.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 340140251 - 2⁶ = 340140187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340160251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261401 + ... + 262698.

It is an arithmetic number, because the mean of its divisors is an integer number (47169000).

Almost surely, 2^340140251 is an apocalyptic number.

340140251 is a deficient number, since it is larger than the sum of its proper divisors (37211749).

340140251 is a wasteful number, since it uses less digits than its factorization.

340140251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524169.

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

The square root of 340140251 is about 18442.8916116752. The cubic root of 340140251 is about 698.0491607480.

Adding to 340140251 its reverse (152041043), we get a palindrome (492181294).

The spelling of 340140251 in words is "three hundred forty million, one hundred forty thousand, two hundred fifty-one".