1031340020 has 24 divisors (see below), whose sum is σ = 2293215624. Its totient is φ = 388269056.

The previous prime is 1031340017. The next prime is 1031340031. The reversal of 1031340020 is 200431301.

It can be written as a sum of positive squares in 4 ways, for example, as 421645156 + 609694864 = 20534^2 + 24692^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1031339977 and 1031340004.

It is a congruent number.

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, 1516337 + ... + 1517016.

It is an arithmetic number, because the mean of its divisors is an integer number (95550651).

Almost surely, 2^1031340020 is an apocalyptic number.

1031340020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031340020 is an abundant number, since it is smaller than the sum of its proper divisors (1261875604).

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

1031340020 is a wasteful number, since it uses less digits than its factorization.

1031340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033379 (or 3033377 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 1031340020 is about 32114.4830255759. The cubic root of 1031340020 is about 1010.3394016680.

Adding to 1031340020 its reverse (200431301), we get a palindrome (1231771321).

The spelling of 1031340020 in words is "one billion, thirty-one million, three hundred forty thousand, twenty".