1031113103220 has 72 divisors (see below), whose sum is σ = 3132762927840. Its totient is φ = 274519258560.

The previous prime is 1031113103213. The next prime is 1031113103249. The reversal of 1031113103220 is 223013111301.

1031113103220 is a `hidden beast` number, since 1 + 0 + 31 + 1 + 1 + 310 + 322 + 0 = 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 = 1031113103193 and 1031113103202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4515726 + ... + 4738565.

It is an arithmetic number, because the mean of its divisors is an integer number (43510596220).

Almost surely, 2^{1031113103220} is an apocalyptic number.

1031113103220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031113103220 is an abundant number, since it is smaller than the sum of its proper divisors (2101649824620).

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

1031113103220 is a wasteful number, since it uses less digits than its factorization.

1031113103220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9254925 (or 9254920 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1031113103220 its reverse (223013111301), we get a palindrome (1254126214521).

The spelling of 1031113103220 in words is "one trillion, thirty-one billion, one hundred thirteen million, one hundred three thousand, two hundred twenty".