1321010433340 has 48 divisors (see below), whose sum is σ = 2988055250208. Its totient is φ = 487669641984.

The previous prime is 1321010433331. The next prime is 1321010433383. The reversal of 1321010433340 is 433340101231.

It is a congruent number.

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, 993139 + ... + 1904821.

It is an arithmetic number, because the mean of its divisors is an integer number (62251151046).

Almost surely, 2^{1321010433340} is an apocalyptic number.

1321010433340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321010433340 is an abundant number, since it is smaller than the sum of its proper divisors (1667044816868).

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

1321010433340 is a wasteful number, since it uses less digits than its factorization.

1321010433340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917278 (or 917276 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1321010433340 its reverse (433340101231), we get a palindrome (1754350534571).

The spelling of 1321010433340 in words is "one trillion, three hundred twenty-one billion, ten million, four hundred thirty-three thousand, three hundred forty".