1031213020 has 12 divisors (see below), whose sum is σ = 2165547384. Its totient is φ = 412485200.

The previous prime is 1031213009. The next prime is 1031213021. The reversal of 1031213020 is 203121301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1031213021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25780306 + ... + 25780345.

It is an arithmetic number, because the mean of its divisors is an integer number (180462282).

Almost surely, 2^1031213020 is an apocalyptic number.

1031213020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031213020 is an abundant number, since it is smaller than the sum of its proper divisors (1134334364).

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

1031213020 is a wasteful number, since it uses less digits than its factorization.

1031213020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51560660 (or 51560658 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1031213020 is about 32112.5056636819. The cubic root of 1031213020 is about 1010.2979286430.

Adding to 1031213020 its reverse (203121301), we get a palindrome (1234334321).

It can be divided in two parts, 10312 and 13020, that added together give a palindrome (23332).

The spelling of 1031213020 in words is "one billion, thirty-one million, two hundred thirteen thousand, twenty".