1340400323020 has 72 divisors (see below), whose sum is σ = 3094519946112. Its totient is φ = 487336143360.

The previous prime is 1340400322951. The next prime is 1340400323029. The reversal of 1340400323020 is 203230040431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1340400322982 and 1340400323000.

It is not an unprimeable number, because it can be changed into a prime (1340400323029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15364644 + ... + 15451636.

It is an arithmetic number, because the mean of its divisors is an integer number (42979443696).

Almost surely, 2^{1340400323020} is an apocalyptic number.

1340400323020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1340400323020 is an abundant number, since it is smaller than the sum of its proper divisors (1754119623092).

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

1340400323020 is a wasteful number, since it uses less digits than its factorization.

1340400323020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93391 (or 93378 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 1340400323020 its reverse (203230040431), we get a palindrome (1543630363451).

The spelling of 1340400323020 in words is "one trillion, three hundred forty billion, four hundred million, three hundred twenty-three thousand, twenty".