1331320232311 has 8 divisors (see below), whose sum is σ = 1332281147904. Its totient is φ = 1330359573240.

The previous prime is 1331320232267. The next prime is 1331320232321. The reversal of 1331320232311 is 1132320231331.

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 1331320232311 - 2¹⁵ = 1331320199543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331320232321) 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, 10999956 + ... + 11120326.

It is an arithmetic number, because the mean of its divisors is an integer number (166535143488).

Almost surely, 2^{1331320232311} is an apocalyptic number.

1331320232311 is a deficient number, since it is larger than the sum of its proper divisors (960915593).

1331320232311 is a wasteful number, since it uses less digits than its factorization.

1331320232311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128261.

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 1331320232311 its reverse (1132320231331), we get a palindrome (2463640463642).

The spelling of 1331320232311 in words is "one trillion, three hundred thirty-one billion, three hundred twenty million, two hundred thirty-two thousand, three hundred eleven".