1371355543331 has 4 divisors (see below), whose sum is σ = 1371372533664. Its totient is φ = 1371338553000.

The previous prime is 1371355543309. The next prime is 1371355543351. The reversal of 1371355543331 is 1333455531731.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1371355543331 - 2¹⁰ = 1371355542307 is a prime.

It is a super-2 number, since 2×1371355543331² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1371355543301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8373515 + ... + 8535716.

It is an arithmetic number, because the mean of its divisors is an integer number (342843133416).

Almost surely, 2^{1371355543331} is an apocalyptic number.

1371355543331 is a deficient number, since it is larger than the sum of its proper divisors (16990333).

1371355543331 is an equidigital number, since it uses as much as digits as its factorization.

1371355543331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16990332.

The product of its digits is 850500, while the sum is 44.

The spelling of 1371355543331 in words is "one trillion, three hundred seventy-one billion, three hundred fifty-five million, five hundred forty-three thousand, three hundred thirty-one".