1020031038 has 24 divisors (see below), whose sum is σ = 2380072968. Its totient is φ = 313855632.

The previous prime is 1020031031. The next prime is 1020031039. The reversal of 1020031038 is 8301300201.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 1020031038.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020031031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2179320 + ... + 2179787.

It is an arithmetic number, because the mean of its divisors is an integer number (99169707).

Almost surely, 2^1020031038 is an apocalyptic number.

1020031038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1020031038 is an abundant number, since it is smaller than the sum of its proper divisors (1360041930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020031038 is a wasteful number, since it uses less digits than its factorization.

1020031038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359128 (or 4359125 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1020031038 is about 31937.9247603848. The cubic root of 1020031038 is about 1006.6329197689.

Adding to 1020031038 its reverse (8301300201), we get a palindrome (9321331239).

It can be divided in two parts, 102003 and 1038, that added together give a square (103041 = 321²).

The spelling of 1020031038 in words is "one billion, twenty million, thirty-one thousand, thirty-eight".