111452013 has 12 divisors (see below), whose sum is σ = 162412380. Its totient is φ = 73643136.

The previous prime is 111451979. The next prime is 111452039. The reversal of 111452013 is 310254111.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 109369764 = 1443^2 + 10458^2 .

It is not a de Polignac number, because 111452013 - 2¹⁷ = 111320941 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111452053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53778 + ... + 55811.

It is an arithmetic number, because the mean of its divisors is an integer number (13534365).

Almost surely, 2^111452013 is an apocalyptic number.

It is an amenable number.

111452013 is a deficient number, since it is larger than the sum of its proper divisors (50960367).

111452013 is a wasteful number, since it uses less digits than its factorization.

111452013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109708 (or 109705 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 111452013 is about 10557.0835461315. The cubic root of 111452013 is about 481.2410203980.

The spelling of 111452013 in words is "one hundred eleven million, four hundred fifty-two thousand, thirteen".