1020023013 has 4 divisors (see below), whose sum is σ = 1360030688. Its totient is φ = 680015340.

The previous prime is 1020022987. The next prime is 1020023027. The reversal of 1020023013 is 3103200201.

It is a happy number.

1020023013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 1020023013 - 2¹⁴ = 1020006629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020023013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020023033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170003833 + ... + 170003838.

It is an arithmetic number, because the mean of its divisors is an integer number (340007672).

Almost surely, 2^1020023013 is an apocalyptic number.

It is an amenable number.

1020023013 is a deficient number, since it is larger than the sum of its proper divisors (340007675).

1020023013 is an equidigital number, since it uses as much as digits as its factorization.

1020023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340007674.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1020023013 is about 31937.7991258008. The cubic root of 1020023013 is about 1006.6302798981.

Adding to 1020023013 its reverse (3103200201), we get a palindrome (4123223214).

The spelling of 1020023013 in words is "one billion, twenty million, twenty-three thousand, thirteen".