251240231303 has 2 divisors, whose sum is σ = 251240231304. Its totient is φ = 251240231302.

The previous prime is 251240231257. The next prime is 251240231317. The reversal of 251240231303 is 303132042152.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251240231303 - 2⁶ = 251240231239 is a prime.

It is a super-4 number, since 4×251240231303⁴ (a number of 47 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251240231603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125620115651 + 125620115652.

It is an arithmetic number, because the mean of its divisors is an integer number (125620115652).

Almost surely, 2^251240231303 is an apocalyptic number.

251240231303 is a deficient number, since it is larger than the sum of its proper divisors (1).

251240231303 is an equidigital number, since it uses as much as digits as its factorization.

251240231303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 26.

Adding to 251240231303 its reverse (303132042152), we get a palindrome (554372273455).

The spelling of 251240231303 in words is "two hundred fifty-one billion, two hundred forty million, two hundred thirty-one thousand, three hundred three".