1023140313681 has 4 divisors (see below), whose sum is σ = 1364187084912. Its totient is φ = 682093542452.

The previous prime is 1023140313623. The next prime is 1023140313683. The reversal of 1023140313681 is 1863130413201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1023140313681 - 2⁶ = 1023140313617 is a prime.

It is a super-2 number, since 2×1023140313681² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1023140313683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170523385611 + ... + 170523385616.

It is an arithmetic number, because the mean of its divisors is an integer number (341046771228).

Almost surely, 2^{1023140313681} is an apocalyptic number.

It is an amenable number.

1023140313681 is a deficient number, since it is larger than the sum of its proper divisors (341046771231).

1023140313681 is an equidigital number, since it uses as much as digits as its factorization.

1023140313681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341046771230.

The product of its (nonzero) digits is 10368, while the sum is 33.

Adding to 1023140313681 its reverse (1863130413201), we get a palindrome (2886270726882).

The spelling of 1023140313681 in words is "one trillion, twenty-three billion, one hundred forty million, three hundred thirteen thousand, six hundred eighty-one".