1020031020 has 72 divisors (see below), whose sum is σ = 3144850800. Its totient is φ = 267546240.

The previous prime is 1020030983. The next prime is 1020031021. The reversal of 1020031020 is 201300201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1020030993 and 1020031011.

It is not an unprimeable number, because it can be changed into a prime (1020031021) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35470 + ... + 57429.

Almost surely, 2^1020031020 is an apocalyptic number.

1020031020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020031020 is an abundant number, since it is smaller than the sum of its proper divisors (2124819780).

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

1020031020 is a wasteful number, since it uses less digits than its factorization.

1020031020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92975 (or 92970 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 1020031020 is about 31937.9244785881. The cubic root of 1020031020 is about 1006.6329138477.

Adding to 1020031020 its reverse (201300201), we get a palindrome (1221331221).

The spelling of 1020031020 in words is "one billion, twenty million, thirty-one thousand, twenty".