1031111311320 has 96 divisors (see below), whose sum is σ = 3406048092720. Its totient is φ = 270455420160.

The previous prime is 1031111311283. The next prime is 1031111311339. The reversal of 1031111311320 is 231131111301.

1031111311320 is a `hidden beast` number, since 1 + 0 + 31 + 1 + 1 + 1 + 311 + 320 = 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 = 1031111311293 and 1031111311302.

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, 23455074 + ... + 23498993.

Almost surely, 2^{1031111311320} is an apocalyptic number.

1031111311320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1031111311320 is an abundant number, since it is smaller than the sum of its proper divisors (2374936781400).

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

1031111311320 is a wasteful number, since it uses less digits than its factorization.

1031111311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46954145 (or 46954138 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 1031111311320 its reverse (231131111301), we get a palindrome (1262242422621).

It can be divided in two parts, 1031111 and 311320, that added together give a palindrome (1342431).

The spelling of 1031111311320 in words is "one trillion, thirty-one billion, one hundred eleven million, three hundred eleven thousand, three hundred twenty".