43231136 has 48 divisors (see below), whose sum is σ = 97065864. Its totient is φ = 18776064.

The previous prime is 43231121. The next prime is 43231171. The reversal of 43231136 is 63113234.

It can be written as a sum of positive squares in 4 ways, for example, as 36240400 + 6990736 = 6020^2 + 2644^2 .

It is a super-2 number, since 2×43231136² = 3737862239700992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4016 + ... + 10128.

Almost surely, 2^43231136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43231136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48532932).

43231136 is an abundant number, since it is smaller than the sum of its proper divisors (53834728).

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

43231136 is a wasteful number, since it uses less digits than its factorization.

43231136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6153 (or 6145 counting only the distinct ones).

The product of its digits is 1296, while the sum is 23.

The square root of 43231136 is about 6575.0388592008. The cubic root of 43231136 is about 350.9664066897.

The spelling of 43231136 in words is "forty-three million, two hundred thirty-one thousand, one hundred thirty-six".