130312340 has 24 divisors (see below), whose sum is σ = 274042440. Its totient is φ = 52051328.

The previous prime is 130312339. The next prime is 130312349. The reversal of 130312340 is 43213031.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2079364 + 128232976 = 1442^2 + 11324^2 .

It is a super-3 number, since 3×130312340³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130312349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11246 + ... + 19674.

It is an arithmetic number, because the mean of its divisors is an integer number (11418435).

Almost surely, 2^130312340 is an apocalyptic number.

130312340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130312340 is an abundant number, since it is smaller than the sum of its proper divisors (143730100).

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

130312340 is a wasteful number, since it uses less digits than its factorization.

130312340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9211 (or 9209 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 130312340 is about 11415.4430487826. The cubic root of 130312340 is about 506.9850828202.

Adding to 130312340 its reverse (43213031), we get a palindrome (173525371).

The spelling of 130312340 in words is "one hundred thirty million, three hundred twelve thousand, three hundred forty".