111442542313 has 2 divisors, whose sum is σ = 111442542314. Its totient is φ = 111442542312.

The previous prime is 111442542209. The next prime is 111442542317. The reversal of 111442542313 is 313245244111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100443357184 + 10999185129 = 316928^2 + 104877^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111442542313 is a prime.

It is not a weakly prime, because it can be changed into another prime (111442542317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55721271156 + 55721271157.

It is an arithmetic number, because the mean of its divisors is an integer number (55721271157).

Almost surely, 2^111442542313 is an apocalyptic number.

It is an amenable number.

111442542313 is a deficient number, since it is larger than the sum of its proper divisors (1).

111442542313 is an equidigital number, since it uses as much as digits as its factorization.

111442542313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 31.

Adding to 111442542313 its reverse (313245244111), we get a palindrome (424687786424).

The spelling of 111442542313 in words is "one hundred eleven billion, four hundred forty-two million, five hundred forty-two thousand, three hundred thirteen".