1031300231220 has 240 divisors, whose sum is σ = 3700550101248. Its totient is φ = 235525086720.

The previous prime is 1031300231207. The next prime is 1031300231243. The reversal of 1031300231220 is 221320031301.

1031300231220 is a `hidden beast` number, since 1 + 0 + 31 + 300 + 2 + 312 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1031300231193 and 1031300231202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 13490505 + ... + 13566735.

Almost surely, 2^{1031300231220} is an apocalyptic number.

1031300231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1031300231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1850275050624).

1031300231220 is an abundant number, since it is smaller than the sum of its proper divisors (2669249870028).

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

1031300231220 is a wasteful number, since it uses less digits than its factorization.

1031300231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77452 (or 77441 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 1031300231220 its reverse (221320031301), we get a palindrome (1252620262521).

The spelling of 1031300231220 in words is "one trillion, thirty-one billion, three hundred million, two hundred thirty-one thousand, two hundred twenty".