251230235124 has 48 divisors (see below), whose sum is σ = 661546710720. Its totient is φ = 73505187840.

The previous prime is 251230235111. The next prime is 251230235129. The reversal of 251230235124 is 421532032152.

It is a junction number, because it is equal to n+sod(n) for n = 251230235091 and 251230235100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251230235129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32810989 + ... + 32818644.

It is an arithmetic number, because the mean of its divisors is an integer number (13782223140).

Almost surely, 2^251230235124 is an apocalyptic number.

It is an amenable number.

251230235124 is an abundant number, since it is smaller than the sum of its proper divisors (410316475596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251230235124 is a wasteful number, since it uses less digits than its factorization.

251230235124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65629680 (or 65629678 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 251230235124 its reverse (421532032152), we get a palindrome (672762267276).

The spelling of 251230235124 in words is "two hundred fifty-one billion, two hundred thirty million, two hundred thirty-five thousand, one hundred twenty-four".