31100003131320 has 192 divisors, whose sum is σ = 105138043264800. Its totient is φ = 7963117102080.

The previous prime is 31100003131289. The next prime is 31100003131331. The reversal of 31100003131320 is 2313130000113.

It is a happy number.

31100003131320 is a `hidden beast` number, since 31 + 1 + 0 + 0 + 0 + 0 + 313 + 1 + 320 = 666.

It is a super-2 number, since 2×31100003131320² (a number of 28 digits) contains 22 as substring.

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 = 31100003131293 and 31100003131302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6339442 + ... + 10118721.

Almost surely, 2^{31100003131320} is an apocalyptic number.

31100003131320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31100003131320 is an abundant number, since it is smaller than the sum of its proper divisors (74038040133480).

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

31100003131320 is a wasteful number, since it uses less digits than its factorization.

31100003131320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16458390 (or 16458383 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31100003131320 its reverse (2313130000113), we get a palindrome (33413133131433).

The spelling of 31100003131320 in words is "thirty-one trillion, one hundred billion, three million, one hundred thirty-one thousand, three hundred twenty".