1233311113381 has 2 divisors, whose sum is σ = 1233311113382. Its totient is φ = 1233311113380.

The previous prime is 1233311113369. The next prime is 1233311113421. The reversal of 1233311113381 is 1833111133321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 977468368900 + 255842744481 = 988670^2 + 505809^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1233311113381 is a prime.

It is a super-2 number, since 2×1233311113381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1233311113081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616655556690 + 616655556691.

It is an arithmetic number, because the mean of its divisors is an integer number (616655556691).

Almost surely, 2^{1233311113381} is an apocalyptic number.

It is an amenable number.

1233311113381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1233311113381 is an equidigital number, since it uses as much as digits as its factorization.

1233311113381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 31.

The spelling of 1233311113381 in words is "one trillion, two hundred thirty-three billion, three hundred eleven million, one hundred thirteen thousand, three hundred eighty-one".