111553542131 has 2 divisors, whose sum is σ = 111553542132. Its totient is φ = 111553542130.

The previous prime is 111553542127. The next prime is 111553542151. The reversal of 111553542131 is 131245355111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111553542131 - 2² = 111553542127 is a prime.

It is a super-2 number, since 2×111553542131² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111553542101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55776771065 + 55776771066.

It is an arithmetic number, because the mean of its divisors is an integer number (55776771066).

Almost surely, 2^111553542131 is an apocalyptic number.

111553542131 is a deficient number, since it is larger than the sum of its proper divisors (1).

111553542131 is an equidigital number, since it uses as much as digits as its factorization.

111553542131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 32.

Adding to 111553542131 its reverse (131245355111), we get a palindrome (242798897242).

The spelling of 111553542131 in words is "one hundred eleven billion, five hundred fifty-three million, five hundred forty-two thousand, one hundred thirty-one".