1020031019 has 4 divisors (see below), whose sum is σ = 1165749744. Its totient is φ = 874312296.

The previous prime is 1020030983. The next prime is 1020031021. The reversal of 1020031019 is 9101300201.

It is a happy number.

1020031019 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.

It is a cyclic number.

It is not a de Polignac number, because 1020031019 - 2¹⁶ = 1019965483 is a prime.

It is a super-2 number, since 2×1020031019² = 2080926559444356722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020030988 and 1020031006.

It is not an unprimeable number, because it can be changed into a prime (1020031039) 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, 72859352 + ... + 72859365.

It is an arithmetic number, because the mean of its divisors is an integer number (291437436).

Almost surely, 2^1020031019 is an apocalyptic number.

1020031019 is a deficient number, since it is larger than the sum of its proper divisors (145718725).

1020031019 is an equidigital number, since it uses as much as digits as its factorization.

1020031019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145718724.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 1020031019 is about 31937.9244629328. The cubic root of 1020031019 is about 1006.6329135187.

The spelling of 1020031019 in words is "one billion, twenty million, thirty-one thousand, nineteen".