111541013 has 2 divisors, whose sum is σ = 111541014. Its totient is φ = 111541012.

The previous prime is 111541009. The next prime is 111541021. The reversal of 111541013 is 310145111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83046769 + 28494244 = 9113^2 + 5338^2 .

It is a cyclic number.

It is not a de Polignac number, because 111541013 - 2² = 111541009 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 111540982 and 111541000.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111541043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55770506 + 55770507.

It is an arithmetic number, because the mean of its divisors is an integer number (55770507).

Almost surely, 2^111541013 is an apocalyptic number.

It is an amenable number.

111541013 is a deficient number, since it is larger than the sum of its proper divisors (1).

111541013 is an equidigital number, since it uses as much as digits as its factorization.

111541013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60, while the sum is 17.

The square root of 111541013 is about 10561.2978842565. The cubic root of 111541013 is about 481.3690846473.

Adding to 111541013 its reverse (310145111), we get a palindrome (421686124).

It can be divided in two parts, 11154 and 1013, that added together give a cube (12167 = 23³).

The spelling of 111541013 in words is "one hundred eleven million, five hundred forty-one thousand, thirteen".