113213145 has 16 divisors (see below), whose sum is σ = 183624192. Its totient is φ = 59552640.

The previous prime is 113213143. The next prime is 113213159. The reversal of 113213145 is 541312311.

It is not a de Polignac number, because 113213145 - 2¹ = 113213143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (113213143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50601 + ... + 52790.

It is an arithmetic number, because the mean of its divisors is an integer number (11476512).

Almost surely, 2^113213145 is an apocalyptic number.

113213145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113213145 is a deficient number, since it is larger than the sum of its proper divisors (70411047).

113213145 is a wasteful number, since it uses less digits than its factorization.

113213145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103472.

The product of its digits is 360, while the sum is 21.

The square root of 113213145 is about 10640.1665870418. The cubic root of 113213145 is about 483.7625947351.

Adding to 113213145 its reverse (541312311), we get a palindrome (654525456).

The spelling of 113213145 in words is "one hundred thirteen million, two hundred thirteen thousand, one hundred forty-five".