1121312201831 has 2 divisors, whose sum is σ = 1121312201832. Its totient is φ = 1121312201830.

The previous prime is 1121312201827. The next prime is 1121312201851. The reversal of 1121312201831 is 1381022131211.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1121312201831 - 2² = 1121312201827 is a prime.

It is a super-3 number, since 3×1121312201831³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1121312201831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121312201851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560656100915 + 560656100916.

It is an arithmetic number, because the mean of its divisors is an integer number (560656100916).

Almost surely, 2^{1121312201831} is an apocalyptic number.

1121312201831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121312201831 is an equidigital number, since it uses as much as digits as its factorization.

1121312201831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 1121312201831 in words is "one trillion, one hundred twenty-one billion, three hundred twelve million, two hundred one thousand, eight hundred thirty-one".