2021013023 has 8 divisors (see below), whose sum is σ = 2158835328. Its totient is φ = 1885295104.

The previous prime is 2021012999. The next prime is 2021013077. The reversal of 2021013023 is 3203101202.

It is a happy number.

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

It is not a de Polignac number, because 2021013023 - 2²² = 2016818719 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2021012989 and 2021013007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021013523) 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, 524111 + ... + 527952.

It is an arithmetic number, because the mean of its divisors is an integer number (269854416).

Almost surely, 2^2021013023 is an apocalyptic number.

2021013023 is a deficient number, since it is larger than the sum of its proper divisors (137822305).

2021013023 is a wasteful number, since it uses less digits than its factorization.

2021013023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052193.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 2021013023 is about 44955.6784288704. The cubic root of 2021013023 is about 1264.3181446192.

Adding to 2021013023 its reverse (3203101202), we get a palindrome (5224114225).

It can be divided in two parts, 20210 and 13023, that added together give a palindrome (33233).

The spelling of 2021013023 in words is "two billion, twenty-one million, thirteen thousand, twenty-three".