1231330320053 has 2 divisors, whose sum is σ = 1231330320054. Its totient is φ = 1231330320052.

The previous prime is 1231330319963. The next prime is 1231330320113. The reversal of 1231330320053 is 3500230331321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170035949124 + 61294370929 = 1081682^2 + 247577^2 .

It is a cyclic number.

It is not a de Polignac number, because 1231330320053 - 2²⁰ = 1231329271477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1231330326053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615665160026 + 615665160027.

It is an arithmetic number, because the mean of its divisors is an integer number (615665160027).

Almost surely, 2^{1231330320053} is an apocalyptic number.

It is an amenable number.

1231330320053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231330320053 is an equidigital number, since it uses as much as digits as its factorization.

1231330320053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 26.

Adding to 1231330320053 its reverse (3500230331321), we get a palindrome (4731560651374).

The spelling of 1231330320053 in words is "one trillion, two hundred thirty-one billion, three hundred thirty million, three hundred twenty thousand, fifty-three".