251350313042 has 8 divisors (see below), whose sum is σ = 377399135100. Its totient is φ = 125550601344.

The previous prime is 251350313009. The next prime is 251350313099. The reversal of 251350313042 is 240313053152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 240020626561 + 11329686481 = 489919^2 + 106441^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×251350313042² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251350312996 and 251350313014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62275067 + ... + 62279102.

Almost surely, 2^251350313042 is an apocalyptic number.

251350313042 is a deficient number, since it is larger than the sum of its proper divisors (126048822058).

251350313042 is a wasteful number, since it uses less digits than its factorization.

251350313042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124555180.

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 251350313042 its reverse (240313053152), we get a palindrome (491663366194).

The spelling of 251350313042 in words is "two hundred fifty-one billion, three hundred fifty million, three hundred thirteen thousand, forty-two".