251040341 has 2 divisors, whose sum is σ = 251040342. Its totient is φ = 251040340.

The previous prime is 251040337. The next prime is 251040353. The reversal of 251040341 is 143040152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214739716 + 36300625 = 14654^2 + 6025^2 .

It is a cyclic number.

It is not a de Polignac number, because 251040341 - 2² = 251040337 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251040371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125520170 + 125520171.

It is an arithmetic number, because the mean of its divisors is an integer number (125520171).

Almost surely, 2^251040341 is an apocalyptic number.

It is an amenable number.

251040341 is a deficient number, since it is larger than the sum of its proper divisors (1).

251040341 is an equidigital number, since it uses as much as digits as its factorization.

251040341 is an evil number, because the sum of its binary digits is even.

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

The square root of 251040341 is about 15844.2526172742. The cubic root of 251040341 is about 630.8331473147.

Adding to 251040341 its reverse (143040152), we get a palindrome (394080493).

The spelling of 251040341 in words is "two hundred fifty-one million, forty thousand, three hundred forty-one".