111331231313131 has 4 divisors (see below), whose sum is σ = 111332247024064. Its totient is φ = 111330215602200.

The previous prime is 111331231313119. The next prime is 111331231313143. The reversal of 111331231313131 is 131313132133111.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (111331231313119) and next prime (111331231313143).

It is a cyclic number.

It is not a de Polignac number, because 111331231313131 - 2⁹ = 111331231312619 is a prime.

It is a super-2 number, since 2×111331231313131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111331231313131.

It is not an unprimeable number, because it can be changed into a prime (111331231313101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 507691035 + ... + 507910276.

It is an arithmetic number, because the mean of its divisors is an integer number (27833061756016).

Almost surely, 2^{111331231313131} is an apocalyptic number.

111331231313131 is a deficient number, since it is larger than the sum of its proper divisors (1015710933).

111331231313131 is a wasteful number, since it uses less digits than its factorization.

111331231313131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015710932.

The product of its digits is 1458, while the sum is 28.

Adding to 111331231313131 its reverse (131313132133111), we get a palindrome (242644363446242).

The spelling of 111331231313131 in words is "one hundred eleven trillion, three hundred thirty-one billion, two hundred thirty-one million, three hundred thirteen thousand, one hundred thirty-one".