1320232031111 has 64 divisors (see below), whose sum is σ = 1635195340800. Its totient is φ = 1063190177280.

The previous prime is 1320232031057. The next prime is 1320232031149. The reversal of 1320232031111 is 1111302320231.

It is a happy number.

It is not a de Polignac number, because 1320232031111 - 2¹⁸ = 1320231768967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320232030111) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 455722415 + ... + 455725311.

It is an arithmetic number, because the mean of its divisors is an integer number (25549927200).

Almost surely, 2^{1320232031111} is an apocalyptic number.

1320232031111 is a deficient number, since it is larger than the sum of its proper divisors (314963309689).

1320232031111 is an equidigital number, since it uses as much as digits as its factorization.

1320232031111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3949 (or 3935 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1320232031111 its reverse (1111302320231), we get a palindrome (2431534351342).

The spelling of 1320232031111 in words is "one trillion, three hundred twenty billion, two hundred thirty-two million, thirty-one thousand, one hundred eleven".