340131220440 has 64 divisors (see below), whose sum is σ = 1113156725760. Its totient is φ = 82456053120.

The previous prime is 340131220423. The next prime is 340131220447. The reversal of 340131220440 is 44022131043.

340131220440 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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

It is a self number, because there is not a number n which added to its sum of digits gives 340131220440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340131220447) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128836264 + ... + 128838903.

It is an arithmetic number, because the mean of its divisors is an integer number (17393073840).

Almost surely, 2^340131220440 is an apocalyptic number.

340131220440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

340131220440 is an abundant number, since it is smaller than the sum of its proper divisors (773025505320).

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

340131220440 is a wasteful number, since it uses less digits than its factorization.

340131220440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257675192 (or 257675188 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 340131220440 its reverse (44022131043), we get a palindrome (384153351483).

The spelling of 340131220440 in words is "three hundred forty billion, one hundred thirty-one million, two hundred twenty thousand, four hundred forty".