111312203131 has 8 divisors (see below), whose sum is σ = 111420645120. Its totient is φ = 111203803368.

The previous prime is 111312203129. The next prime is 111312203153. The reversal of 111312203131 is 131302213111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 111312203131 - 2¹ = 111312203129 is a prime.

It is a super-2 number, since 2×111312203131² (a number of 23 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 = 111312203099 and 111312203108.

It is not an unprimeable number, because it can be changed into a prime (111312203111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8013250 + ... + 8027128.

It is an arithmetic number, because the mean of its divisors is an integer number (13927580640).

Almost surely, 2^111312203131 is an apocalyptic number.

111312203131 is a deficient number, since it is larger than the sum of its proper divisors (108441989).

111312203131 is a wasteful number, since it uses less digits than its factorization.

111312203131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21113.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111312203131 its reverse (131302213111), we get a palindrome (242614416242).

The spelling of 111312203131 in words is "one hundred eleven billion, three hundred twelve million, two hundred three thousand, one hundred thirty-one".