251230145430 has 64 divisors (see below), whose sum is σ = 657964809216. Its totient is φ = 60885888000.

The previous prime is 251230145429. The next prime is 251230145473. The reversal of 251230145430 is 34541032152.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 995875 + ... + 1222385.

It is an arithmetic number, because the mean of its divisors is an integer number (10280700144).

Almost surely, 2^251230145430 is an apocalyptic number.

251230145430 is an abundant number, since it is smaller than the sum of its proper divisors (406734663786).

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

251230145430 is a wasteful number, since it uses less digits than its factorization.

251230145430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229893.

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

Adding to 251230145430 its reverse (34541032152), we get a palindrome (285771177582).

The spelling of 251230145430 in words is "two hundred fifty-one billion, two hundred thirty million, one hundred forty-five thousand, four hundred thirty".