1231032323533 has 2 divisors, whose sum is σ = 1231032323534. Its totient is φ = 1231032323532.

The previous prime is 1231032323519. The next prime is 1231032323561. The reversal of 1231032323533 is 3353232301321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1053031025929 + 178001297604 = 1026173^2 + 421902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1231032323533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231032323495 and 1231032323504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231032323933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615516161766 + 615516161767.

It is an arithmetic number, because the mean of its divisors is an integer number (615516161767).

Almost surely, 2^{1231032323533} is an apocalyptic number.

It is an amenable number.

1231032323533 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231032323533 is an equidigital number, since it uses as much as digits as its factorization.

1231032323533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29160, while the sum is 31.

Adding to 1231032323533 its reverse (3353232301321), we get a palindrome (4584264624854).

The spelling of 1231032323533 in words is "one trillion, two hundred thirty-one billion, thirty-two million, three hundred twenty-three thousand, five hundred thirty-three".