251423445230 has 16 divisors (see below), whose sum is σ = 453507016320. Its totient is φ = 100359419232.

The previous prime is 251423445211. The next prime is 251423445253. The reversal of 251423445230 is 32544324152.

It is a happy number.

It is a super-2 number, since 2×251423445230² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26239829 + ... + 26249408.

It is an arithmetic number, because the mean of its divisors is an integer number (28344188520).

Almost surely, 2^251423445230 is an apocalyptic number.

251423445230 is a deficient number, since it is larger than the sum of its proper divisors (202083571090).

251423445230 is a wasteful number, since it uses less digits than its factorization.

251423445230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52489723.

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 251423445230 its reverse (32544324152), we get a palindrome (283967769382).

The spelling of 251423445230 in words is "two hundred fifty-one billion, four hundred twenty-three million, four hundred forty-five thousand, two hundred thirty".