130440312 has 48 divisors (see below), whose sum is σ = 364678080. Its totient is φ = 42076800.

The previous prime is 130440287. The next prime is 130440313. The reversal of 130440312 is 213044031.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440313) 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, 26989 + ... + 31452.

It is an arithmetic number, because the mean of its divisors is an integer number (7597460).

Almost surely, 2^130440312 is an apocalyptic number.

130440312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

130440312 is an abundant number, since it is smaller than the sum of its proper divisors (234237768).

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

130440312 is a wasteful number, since it uses less digits than its factorization.

130440312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58484 (or 58477 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 130440312 is about 11421.0468872166. The cubic root of 130440312 is about 507.1509884906.

Adding to 130440312 its reverse (213044031), we get a palindrome (343484343).

It can be divided in two parts, 13044031 and 2, that multiplied together give a palindrome (26088062).

The spelling of 130440312 in words is "one hundred thirty million, four hundred forty thousand, three hundred twelve".