1012131020 has 24 divisors (see below), whose sum is σ = 2126207664. Its totient is φ = 404712896.

The previous prime is 1012131019. The next prime is 1012131049. The reversal of 1012131020 is 201312101.

It is a junction number, because it is equal to n+sod(n) for n = 1012130992 and 1012131010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66659 + ... + 80421.

It is an arithmetic number, because the mean of its divisors is an integer number (88591986).

Almost surely, 2^1012131020 is an apocalyptic number.

1012131020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012131020 is an abundant number, since it is smaller than the sum of its proper divisors (1114076644).

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

1012131020 is a wasteful number, since it uses less digits than its factorization.

1012131020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17449 (or 17447 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1012131020 is about 31814.0066637322. The cubic root of 1012131020 is about 1004.0274313548.

Adding to 1012131020 its reverse (201312101), we get a palindrome (1213443121).

The spelling of 1012131020 in words is "one billion, twelve million, one hundred thirty-one thousand, twenty".