1133203312781 has 2 divisors, whose sum is σ = 1133203312782. Its totient is φ = 1133203312780.

The previous prime is 1133203312777. The next prime is 1133203312807. The reversal of 1133203312781 is 1872133023311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 796966852900 + 336236459881 = 892730^2 + 579859^2 .

It is a cyclic number.

It is not a de Polignac number, because 1133203312781 - 2² = 1133203312777 is a prime.

It is a super-2 number, since 2×1133203312781² (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 (1133203312481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 566601656390 + 566601656391.

It is an arithmetic number, because the mean of its divisors is an integer number (566601656391).

Almost surely, 2^{1133203312781} is an apocalyptic number.

It is an amenable number.

1133203312781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1133203312781 is an equidigital number, since it uses as much as digits as its factorization.

1133203312781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The spelling of 1133203312781 in words is "one trillion, one hundred thirty-three billion, two hundred three million, three hundred twelve thousand, seven hundred eighty-one".