1331022311231 has 8 divisors (see below), whose sum is σ = 1333061386704. Its totient is φ = 1328983501120.

The previous prime is 1331022311167. The next prime is 1331022311263. The reversal of 1331022311231 is 1321132201331.

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

It is a cyclic number.

It is not a de Polignac number, because 1331022311231 - 2⁶ = 1331022311167 is a prime.

It is a super-2 number, since 2×1331022311231² (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 = 1331022311197 and 1331022311206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331012311231) 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, 11510441 + ... + 11625501.

It is an arithmetic number, because the mean of its divisors is an integer number (166632673338).

Almost surely, 2^{1331022311231} is an apocalyptic number.

1331022311231 is a deficient number, since it is larger than the sum of its proper divisors (2039075473).

1331022311231 is a wasteful number, since it uses less digits than its factorization.

1331022311231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132681.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1331022311231 its reverse (1321132201331), we get a palindrome (2652154512562).

The spelling of 1331022311231 in words is "one trillion, three hundred thirty-one billion, twenty-two million, three hundred eleven thousand, two hundred thirty-one".