113213142 has 48 divisors (see below), whose sum is σ = 281822112. Its totient is φ = 32175360.

The previous prime is 113213123. The next prime is 113213143. The reversal of 113213142 is 241312311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 23 ways as a sum of consecutive naturals, for example, 22542 + ... + 27102.

It is an arithmetic number, because the mean of its divisors is an integer number (5871294).

Almost surely, 2^113213142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113213142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140911056).

113213142 is an abundant number, since it is smaller than the sum of its proper divisors (168608970).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

113213142 is a wasteful number, since it uses less digits than its factorization.

113213142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4773 (or 4770 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 113213142 is about 10640.1664460665. The cubic root of 113213142 is about 483.7625904621.

Adding to 113213142 its reverse (241312311), we get a palindrome (354525453).

The spelling of 113213142 in words is "one hundred thirteen million, two hundred thirteen thousand, one hundred forty-two".