1320011311 has 2 divisors, whose sum is σ = 1320011312. Its totient is φ = 1320011310.

The previous prime is 1320011267. The next prime is 1320011317. The reversal of 1320011311 is 1131100231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1320011311 is a prime.

It is a super-2 number, since 2×1320011311² = 3484859722335877442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1320011291 and 1320011300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1320011317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660005655 + 660005656.

It is an arithmetic number, because the mean of its divisors is an integer number (660005656).

Almost surely, 2^1320011311 is an apocalyptic number.

1320011311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1320011311 is an equidigital number, since it uses as much as digits as its factorization.

1320011311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 1320011311 is about 36331.9599113508. The cubic root of 1320011311 is about 1096.9644437426.

Adding to 1320011311 its reverse (1131100231), we get a palindrome (2451111542).

The spelling of 1320011311 in words is "one billion, three hundred twenty million, eleven thousand, three hundred eleven".