1011310020 has 108 divisors (see below), whose sum is σ = 3568510764. Its totient is φ = 231154560.

The previous prime is 1011310019. The next prime is 1011310043. The reversal of 1011310020 is 200131101.

It can be written as a sum of positive squares in 2 ways, for example, as 384708996 + 626601024 = 19614^2 + 25032^2 .

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 = 1011309984 and 1011310011.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 48511 + ... + 66150.

Almost surely, 2^1011310020 is an apocalyptic number.

1011310020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011310020 is an abundant number, since it is smaller than the sum of its proper divisors (2557200744).

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

1011310020 is a wasteful number, since it uses less digits than its factorization.

1011310020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114690 (or 114678 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 1011310020 is about 31801.1009243391. The cubic root of 1011310020 is about 1003.7558823534.

Adding to 1011310020 its reverse (200131101), we get a palindrome (1211441121).

The spelling of 1011310020 in words is "one billion, eleven million, three hundred ten thousand, twenty".