1020031104 has 64 divisors (see below), whose sum is σ = 2714171040. Its totient is φ = 339419136.

The previous prime is 1020031091. The next prime is 1020031109. The reversal of 1020031104 is 4011300201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1020031104.

It is not an unprimeable number, because it can be changed into a prime (1020031109) 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, 256459 + ... + 260405.

Almost surely, 2^1020031104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020031104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1357085520).

1020031104 is an abundant number, since it is smaller than the sum of its proper divisors (1694139936).

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

1020031104 is an equidigital number, since it uses as much as digits as its factorization.

1020031104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637 (or 4625 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1020031104 is about 31937.9257936391. The cubic root of 1020031104 is about 1006.6329414799.

Adding to 1020031104 its reverse (4011300201), we get a palindrome (5031331305).

The spelling of 1020031104 in words is "one billion, twenty million, thirty-one thousand, one hundred four".