251340112 has 40 divisors (see below), whose sum is σ = 504221696. Its totient is φ = 121274496.

The previous prime is 251340101. The next prime is 251340163. The reversal of 251340112 is 211043152.

It is a self number, because there is not a number n which added to its sum of digits gives 251340112.

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, 73513 + ... + 76855.

Almost surely, 2^251340112 is an apocalyptic number.

It is an amenable number.

251340112 is an abundant number, since it is smaller than the sum of its proper divisors (252881584).

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

251340112 is a wasteful number, since it uses less digits than its factorization.

251340112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3515 (or 3509 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 251340112 is about 15853.7097235947. The cubic root of 251340112 is about 631.0841431790.

Adding to 251340112 its reverse (211043152), we get a palindrome (462383264).

The spelling of 251340112 in words is "two hundred fifty-one million, three hundred forty thousand, one hundred twelve".