251343342334 has 12 divisors (see below), whose sum is σ = 438568485264. Its totient is φ = 107718575244.

The previous prime is 251343342311. The next prime is 251343342379. The reversal of 251343342334 is 433243343152.

It is a junction number, because it is equal to n+sod(n) for n = 251343342293 and 251343342302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1282363894 + ... + 1282364089.

It is an arithmetic number, because the mean of its divisors is an integer number (36547373772).

Almost surely, 2^251343342334 is an apocalyptic number.

251343342334 is a deficient number, since it is larger than the sum of its proper divisors (187225142930).

251343342334 is a wasteful number, since it uses less digits than its factorization.

251343342334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564727999 (or 2564727992 counting only the distinct ones).

The product of its digits is 311040, while the sum is 37.

Adding to 251343342334 its reverse (433243343152), we get a palindrome (684586685486).

The spelling of 251343342334 in words is "two hundred fifty-one billion, three hundred forty-three million, three hundred forty-two thousand, three hundred thirty-four".