1020023013281 has 2 divisors, whose sum is σ = 1020023013282. Its totient is φ = 1020023013280.

The previous prime is 1020023013259. The next prime is 1020023013287. The reversal of 1020023013281 is 1823103200201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 986875349056 + 33147664225 = 993416^2 + 182065^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020023013281 - 2¹⁰ = 1020023012257 is a prime.

It is a super-2 number, since 2×1020023013281² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1020023013287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510011506640 + 510011506641.

It is an arithmetic number, because the mean of its divisors is an integer number (510011506641).

Almost surely, 2^{1020023013281} is an apocalyptic number.

It is an amenable number.

1020023013281 is a deficient number, since it is larger than the sum of its proper divisors (1).

1020023013281 is an equidigital number, since it uses as much as digits as its factorization.

1020023013281 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 23.

Adding to 1020023013281 its reverse (1823103200201), we get a palindrome (2843126213482).

The spelling of 1020023013281 in words is "one trillion, twenty billion, twenty-three million, thirteen thousand, two hundred eighty-one".