1331254521331 has 16 divisors (see below), whose sum is σ = 1552579200000. Its totient is φ = 1141004896584.

The previous prime is 1331254521293. The next prime is 1331254521371.

1331254521331 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1331254521331 - 2⁷ = 1331254521203 is a prime.

It is a super-2 number, since 2×1331254521331² (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 (1331254521371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5885670 + ... + 6107668.

It is an arithmetic number, because the mean of its divisors is an integer number (97036200000).

Almost surely, 2^{1331254521331} is an apocalyptic number.

1331254521331 is a deficient number, since it is larger than the sum of its proper divisors (221324678669).

1331254521331 is an equidigital number, since it uses as much as digits as its factorization.

1331254521331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239503 (or 239489 counting only the distinct ones).

The product of its digits is 32400, while the sum is 34.

The spelling of 1331254521331 in words is "one trillion, three hundred thirty-one billion, two hundred fifty-four million, five hundred twenty-one thousand, three hundred thirty-one".