111245235131 has 2 divisors, whose sum is σ = 111245235132. Its totient is φ = 111245235130.

The previous prime is 111245235089. The next prime is 111245235203. The reversal of 111245235131 is 131532542111.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111245235131 - 2¹⁸ = 111244972987 is a prime.

It is a super-2 number, since 2×111245235131² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 111245235094 and 111245235103.

It is not a weakly prime, because it can be changed into another prime (111245205131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55622617565 + 55622617566.

It is an arithmetic number, because the mean of its divisors is an integer number (55622617566).

Almost surely, 2^111245235131 is an apocalyptic number.

111245235131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111245235131 is an equidigital number, since it uses as much as digits as its factorization.

111245235131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3600, while the sum is 29.

Adding to 111245235131 its reverse (131532542111), we get a palindrome (242777777242).

The spelling of 111245235131 in words is "one hundred eleven billion, two hundred forty-five million, two hundred thirty-five thousand, one hundred thirty-one".