1331111120329 has 4 divisors (see below), whose sum is σ = 1409411774484. Its totient is φ = 1252810466176.

The previous prime is 1331111120309. The next prime is 1331111120341. The reversal of 1331111120329 is 9230211111331.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1189949359104 + 141161761225 = 1090848^2 + 375715^2 .

It is a cyclic number.

It is not a de Polignac number, because 1331111120329 - 2¹³ = 1331111112137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331111120297 and 1331111120306.

It is not an unprimeable number, because it can be changed into a prime (1331111120309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39150327052 + ... + 39150327085.

It is an arithmetic number, because the mean of its divisors is an integer number (352352943621).

Almost surely, 2^{1331111120329} is an apocalyptic number.

It is an amenable number.

1331111120329 is a deficient number, since it is larger than the sum of its proper divisors (78300654155).

1331111120329 is an equidigital number, since it uses as much as digits as its factorization.

1331111120329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78300654154.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 1331111120329 in words is "one trillion, three hundred thirty-one billion, one hundred eleven million, one hundred twenty thousand, three hundred twenty-nine".