43505231340 has 48 divisors (see below), whose sum is σ = 124406456832. Its totient is φ = 11354556096.

The previous prime is 43505231309. The next prime is 43505231351. The reversal of 43505231340 is 4313250534.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 43505231298 and 43505231307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7710874 + ... + 7716513.

It is an arithmetic number, because the mean of its divisors is an integer number (2591801184).

Almost surely, 2^43505231340 is an apocalyptic number.

It is an amenable number.

43505231340 is an abundant number, since it is smaller than the sum of its proper divisors (80901225492).

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

43505231340 is a wasteful number, since it uses less digits than its factorization.

43505231340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15427446 (or 15427444 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 43505231340 its reverse (4313250534), we get a palindrome (47818481874).

The spelling of 43505231340 in words is "forty-three billion, five hundred five million, two hundred thirty-one thousand, three hundred forty".