111121310331 has 6 divisors (see below), whose sum is σ = 160508559380. Its totient is φ = 74080873548.

The previous prime is 111121310327. The next prime is 111121310347. The reversal of 111121310331 is 133013121111.

111121310331 is a `hidden beast` number, since 1 + 1 + 1 + 1 + 21 + 310 + 331 = 666.

It is not a de Polignac number, because 111121310331 - 2² = 111121310327 is a prime.

It is a super-2 number, since 2×111121310331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111121311331) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6173406121 + ... + 6173406138.

Almost surely, 2^111121310331 is an apocalyptic number.

111121310331 is a deficient number, since it is larger than the sum of its proper divisors (49387249049).

111121310331 is a wasteful number, since it uses less digits than its factorization.

111121310331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12346812265 (or 12346812262 counting only the distinct ones).

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

Adding to 111121310331 its reverse (133013121111), we get a palindrome (244134431442).

The spelling of 111121310331 in words is "one hundred eleven billion, one hundred twenty-one million, three hundred ten thousand, three hundred thirty-one".