113145012 has 60 divisors (see below), whose sum is σ = 298059300. Its totient is φ = 37425024.

The previous prime is 113144987. The next prime is 113145017. The reversal of 113145012 is 210541311.

It can be written as a sum of positive squares in 2 ways, for example, as 88284816 + 24860196 = 9396^2 + 4986^2 .

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 (113145017) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 43114 + ... + 45662.

It is an arithmetic number, because the mean of its divisors is an integer number (4967655).

Almost surely, 2^113145012 is an apocalyptic number.

113145012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113145012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149029650).

113145012 is an abundant number, since it is smaller than the sum of its proper divisors (184914288).

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

113145012 is a wasteful number, since it uses less digits than its factorization.

113145012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2702 (or 2691 counting only the distinct ones).

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

The square root of 113145012 is about 10636.9644165993. The cubic root of 113145012 is about 483.6655305912.

Adding to 113145012 its reverse (210541311), we get a palindrome (323686323).

The spelling of 113145012 in words is "one hundred thirteen million, one hundred forty-five thousand, twelve".