1111331313131 has 16 divisors (see below), whose sum is σ = 1199792210400. Its totient is φ = 1023296440320.

The previous prime is 1111331313061. The next prime is 1111331313161. The reversal of 1111331313131 is 1313131331111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111331313131 is a prime.

It is a super-2 number, since 2×1111331313131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111331313097 and 1111331313106.

It is not an unprimeable number, because it can be changed into a prime (1111331313161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24849116 + ... + 24893798.

It is an arithmetic number, because the mean of its divisors is an integer number (74987013150).

Almost surely, 2^{1111331313131} is an apocalyptic number.

1111331313131 is a deficient number, since it is larger than the sum of its proper divisors (88460897269).

1111331313131 is a wasteful number, since it uses less digits than its factorization.

1111331313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49406.

The product of its digits is 243, while the sum is 23.

Adding to 1111331313131 its reverse (1313131331111), we get a palindrome (2424462644242).

The spelling of 1111331313131 in words is "one trillion, one hundred eleven billion, three hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".