251033230224340 has 48 divisors (see below), whose sum is σ = 531724426128000. Its totient is φ = 99548406403200.

The previous prime is 251033230224317. The next prime is 251033230224341. The reversal of 251033230224340 is 43422032330152.

It is a junction number, because it is equal to n+sod(n) for n = 251033230224296 and 251033230224305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251033230224341) 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, 81783187 + ... + 84797146.

It is an arithmetic number, because the mean of its divisors is an integer number (11077592211000).

Almost surely, 2^{251033230224340} is an apocalyptic number.

251033230224340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251033230224340 is an abundant number, since it is smaller than the sum of its proper divisors (280691195903660).

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

251033230224340 is a wasteful number, since it uses less digits than its factorization.

251033230224340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166580992 (or 166580990 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 251033230224340 its reverse (43422032330152), we get a palindrome (294455262554492).

The spelling of 251033230224340 in words is "two hundred fifty-one trillion, thirty-three billion, two hundred thirty million, two hundred twenty-four thousand, three hundred forty".