1020323123445 has 64 divisors (see below), whose sum is σ = 1665039004416. Its totient is φ = 533416181760.

The previous prime is 1020323123429. The next prime is 1020323123447. The reversal of 1020323123445 is 5443213230201.

It is not a de Polignac number, because 1020323123445 - 2⁴ = 1020323123429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020323123447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 418678767 + ... + 418681203.

It is an arithmetic number, because the mean of its divisors is an integer number (26016234444).

Almost surely, 2^{1020323123445} is an apocalyptic number.

1020323123445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1020323123445 is a deficient number, since it is larger than the sum of its proper divisors (644715880971).

1020323123445 is a wasteful number, since it uses less digits than its factorization.

1020323123445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 1020323123445 its reverse (5443213230201), we get a palindrome (6463536353646).

The spelling of 1020323123445 in words is "one trillion, twenty billion, three hundred twenty-three million, one hundred twenty-three thousand, four hundred forty-five".