2021313120623 has 2 divisors, whose sum is σ = 2021313120624. Its totient is φ = 2021313120622.

The previous prime is 2021313120613. The next prime is 2021313120637. The reversal of 2021313120623 is 3260213131202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021313120623 - 2¹² = 2021313116527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2021313120592 and 2021313120601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021313120613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010656560311 + 1010656560312.

It is an arithmetic number, because the mean of its divisors is an integer number (1010656560312).

Almost surely, 2^{2021313120623} is an apocalyptic number.

2021313120623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021313120623 is an equidigital number, since it uses as much as digits as its factorization.

2021313120623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 2021313120623 its reverse (3260213131202), we get a palindrome (5281526251825).

The spelling of 2021313120623 in words is "two trillion, twenty-one billion, three hundred thirteen million, one hundred twenty thousand, six hundred twenty-three".