1020165023 has 8 divisors (see below), whose sum is σ = 1065516768. Its totient is φ = 974896384.

The previous prime is 1020165011. The next prime is 1020165049. The reversal of 1020165023 is 3205610201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020165023 - 2⁴ = 1020165007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1020164986 and 1020165004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020165823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5015 + ... + 45447.

It is an arithmetic number, because the mean of its divisors is an integer number (133189596).

Almost surely, 2^1020165023 is an apocalyptic number.

1020165023 is a deficient number, since it is larger than the sum of its proper divisors (45351745).

1020165023 is a wasteful number, since it uses less digits than its factorization.

1020165023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41553.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1020165023 is about 31940.0222761350. The cubic root of 1020165023 is about 1006.6769928744.

Adding to 1020165023 its reverse (3205610201), we get a palindrome (4225775224).

The spelling of 1020165023 in words is "one billion, twenty million, one hundred sixty-five thousand, twenty-three".