1331343947823 has 8 divisors (see below), whose sum is σ = 1775130607536. Its totient is φ = 887559960000.

The previous prime is 1331343947821. The next prime is 1331343947827. The reversal of 1331343947823 is 3287493431331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1331343947823 - 2¹ = 1331343947821 is a prime.

It is a super-3 number, since 3×1331343947823³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331343947821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498323 + ... + 2215323.

It is an arithmetic number, because the mean of its divisors is an integer number (221891325942).

Almost surely, 2^{1331343947823} is an apocalyptic number.

1331343947823 is a deficient number, since it is larger than the sum of its proper divisors (443786659713).

1331343947823 is an equidigital number, since it uses as much as digits as its factorization.

1331343947823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335945.

The product of its digits is 3919104, while the sum is 51.

The spelling of 1331343947823 in words is "one trillion, three hundred thirty-one billion, three hundred forty-three million, nine hundred forty-seven thousand, eight hundred twenty-three".