1331313002231 has 4 divisors (see below), whose sum is σ = 1409625531792. Its totient is φ = 1253000472672.

The previous prime is 1331313002221. The next prime is 1331313002281. The reversal of 1331313002231 is 1322003131331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331313002231 is a prime.

It is a super-2 number, since 2×1331313002231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331313002197 and 1331313002206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331313002221) 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, 39156264755 + ... + 39156264788.

It is an arithmetic number, because the mean of its divisors is an integer number (352406382948).

Almost surely, 2^{1331313002231} is an apocalyptic number.

1331313002231 is a deficient number, since it is larger than the sum of its proper divisors (78312529561).

1331313002231 is an equidigital number, since it uses as much as digits as its factorization.

1331313002231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78312529560.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1331313002231 its reverse (1322003131331), we get a palindrome (2653316133562).

The spelling of 1331313002231 in words is "one trillion, three hundred thirty-one billion, three hundred thirteen million, two thousand, two hundred thirty-one".