1020031319 has 4 divisors (see below), whose sum is σ = 1022575440. Its totient is φ = 1017487200.

The previous prime is 1020031303. The next prime is 1020031357. The reversal of 1020031319 is 9131300201.

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 1020031319 - 2⁴ = 1020031303 is a prime.

It is a super-2 number, since 2×1020031319² = 2080927783481759522, which contains 22 as substring.

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 1020031319.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020031379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1271459 + ... + 1272260.

It is an arithmetic number, because the mean of its divisors is an integer number (255643860).

Almost surely, 2^1020031319 is an apocalyptic number.

1020031319 is a deficient number, since it is larger than the sum of its proper divisors (2544121).

1020031319 is an equidigital number, since it uses as much as digits as its factorization.

1020031319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544120.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 1020031319 is about 31937.9291595432. The cubic root of 1020031319 is about 1006.6330122052.

The spelling of 1020031319 in words is "one billion, twenty million, thirty-one thousand, three hundred nineteen".