1321234301340 has 72 divisors (see below), whose sum is σ = 4026738210768. Its totient is φ = 350659330560.

The previous prime is 1321234301267. The next prime is 1321234301347. The reversal of 1321234301340 is 431034321231.

It is a happy number.

1321234301340 is a `hidden beast` number, since 1 + 3 + 2 + 12 + 3 + 4 + 301 + 340 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321234301347) 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, 17355837 + ... + 17431796.

It is an arithmetic number, because the mean of its divisors is an integer number (55926919594).

Almost surely, 2^{1321234301340} is an apocalyptic number.

1321234301340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321234301340 is an abundant number, since it is smaller than the sum of its proper divisors (2705503909428).

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

1321234301340 is a wasteful number, since it uses less digits than its factorization.

1321234301340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34787859 (or 34787854 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 1321234301340 its reverse (431034321231), we get a palindrome (1752268622571).

The spelling of 1321234301340 in words is "one trillion, three hundred twenty-one billion, two hundred thirty-four million, three hundred one thousand, three hundred forty".