1213323403340 has 48 divisors (see below), whose sum is σ = 2617519726080. Its totient is φ = 472150609920.

The previous prime is 1213323403337. The next prime is 1213323403379. The reversal of 1213323403340 is 433043233121.

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, 1806380 + ... + 2385299.

It is an arithmetic number, because the mean of its divisors is an integer number (54531660960).

Almost surely, 2^{1213323403340} is an apocalyptic number.

1213323403340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1213323403340 is an abundant number, since it is smaller than the sum of its proper divisors (1404196322740).

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

1213323403340 is a wasteful number, since it uses less digits than its factorization.

1213323403340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4192082 (or 4192080 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 1213323403340 its reverse (433043233121), we get a palindrome (1646366636461).

The spelling of 1213323403340 in words is "one trillion, two hundred thirteen billion, three hundred twenty-three million, four hundred three thousand, three hundred forty".