251241144230 has 128 divisors (see below), whose sum is σ = 487130941440. Its totient is φ = 93089018880.

The previous prime is 251241144151. The next prime is 251241144241. The reversal of 251241144230 is 32441142152.

It is a happy number.

It is a super-2 number, since 2×251241144230² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 251241144193 and 251241144202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 226546916 + ... + 226548024.

It is an arithmetic number, because the mean of its divisors is an integer number (3805710480).

Almost surely, 2^251241144230 is an apocalyptic number.

251241144230 is a deficient number, since it is larger than the sum of its proper divisors (235889797210).

251241144230 is a wasteful number, since it uses less digits than its factorization.

251241144230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 251241144230 its reverse (32441142152), we get a palindrome (283682286382).

The spelling of 251241144230 in words is "two hundred fifty-one billion, two hundred forty-one million, one hundred forty-four thousand, two hundred thirty".