111287401 has 2 divisors, whose sum is σ = 111287402. Its totient is φ = 111287400.

The previous prime is 111287387. The next prime is 111287417. The reversal of 111287401 is 104782111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83997225 + 27290176 = 9165^2 + 5224^2 .

It is a cyclic number.

It is not a de Polignac number, because 111287401 - 2⁵ = 111287369 is a prime.

It is not a weakly prime, because it can be changed into another prime (111287441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55643700 + 55643701.

It is an arithmetic number, because the mean of its divisors is an integer number (55643701).

Almost surely, 2^111287401 is an apocalyptic number.

It is an amenable number.

111287401 is a deficient number, since it is larger than the sum of its proper divisors (1).

111287401 is an equidigital number, since it uses as much as digits as its factorization.

111287401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 111287401 is about 10549.2843833125. The cubic root of 111287401 is about 481.0039764368.

The spelling of 111287401 in words is "one hundred eleven million, two hundred eighty-seven thousand, four hundred one".