1311020111330 has 16 divisors (see below), whose sum is σ = 2359993239864. Its totient is φ = 524373146880.

The previous prime is 1311020111321. The next prime is 1311020111341. The reversal of 1311020111330 is 331110201131.

It can be written as a sum of positive squares in 4 ways, for example, as 1232182141369 + 78837969961 = 1110037^2 + 280781^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1311020111299 and 1311020111308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4204151 + ... + 4505210.

Almost surely, 2^{1311020111330} is an apocalyptic number.

1311020111330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311020111330 is a deficient number, since it is larger than the sum of its proper divisors (1048973128534).

1311020111330 is a wasteful number, since it uses less digits than its factorization.

1311020111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8724421.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 1311020111330 its reverse (331110201131), we get a palindrome (1642130312461).

The spelling of 1311020111330 in words is "one trillion, three hundred eleven billion, twenty million, one hundred eleven thousand, three hundred thirty".