130722318 has 24 divisors (see below), whose sum is σ = 298139400. Its totient is φ = 41280624.

The previous prime is 130722313. The next prime is 130722331. The reversal of 130722318 is 813227031.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130722291 and 130722300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130722313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 190773 + ... + 191456.

It is an arithmetic number, because the mean of its divisors is an integer number (12422475).

Almost surely, 2^130722318 is an apocalyptic number.

130722318 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130722318 is an abundant number, since it is smaller than the sum of its proper divisors (167417082).

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

130722318 is a wasteful number, since it uses less digits than its factorization.

130722318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382256 (or 382253 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 130722318 is about 11433.3861126090. The cubic root of 130722318 is about 507.5162045187.

Adding to 130722318 its reverse (813227031), we get a palindrome (943949349).

The spelling of 130722318 in words is "one hundred thirty million, seven hundred twenty-two thousand, three hundred eighteen".