440231130312 has 32 divisors (see below), whose sum is σ = 1104049699200. Its totient is φ = 146280793664.

The previous prime is 440231130307. The next prime is 440231130371. The reversal of 440231130312 is 213031132044.

It is a happy number.

It is a super-2 number, since 2×440231130312² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28924512 + ... + 28939727.

It is an arithmetic number, because the mean of its divisors is an integer number (34501553100).

Almost surely, 2^440231130312 is an apocalyptic number.

It is an amenable number.

440231130312 is an abundant number, since it is smaller than the sum of its proper divisors (663818568888).

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

440231130312 is a wasteful number, since it uses less digits than its factorization.

440231130312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57864565 (or 57864561 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 440231130312 its reverse (213031132044), we get a palindrome (653262262356).

The spelling of 440231130312 in words is "four hundred forty billion, two hundred thirty-one million, one hundred thirty thousand, three hundred twelve".