251302340030 has 96 divisors (see below), whose sum is σ = 549475024896. Its totient is φ = 81046503936.

The previous prime is 251302340021. The next prime is 251302340099. The reversal of 251302340030 is 30043203152.

It is a super-2 number, since 2×251302340030² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251302339978 and 251302340005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70135619 + ... + 70139201.

It is an arithmetic number, because the mean of its divisors is an integer number (5723698176).

Almost surely, 2^251302340030 is an apocalyptic number.

251302340030 is an abundant number, since it is smaller than the sum of its proper divisors (298172684866).

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

251302340030 is a wasteful number, since it uses less digits than its factorization.

251302340030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7098 (or 7081 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 251302340030 its reverse (30043203152), we get a palindrome (281345543182).

The spelling of 251302340030 in words is "two hundred fifty-one billion, three hundred two million, three hundred forty thousand, thirty".