40231156 has 60 divisors (see below), whose sum is σ = 84702240. Its totient is φ = 16710960.

The previous prime is 40231153. The next prime is 40231157. The reversal of 40231156 is 65113204.

40231156 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40231153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 566601 + ... + 566671.

It is an arithmetic number, because the mean of its divisors is an integer number (1411704).

Almost surely, 2^40231156 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 40231156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42351120).

40231156 is an abundant number, since it is smaller than the sum of its proper divisors (44471084).

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

40231156 is an equidigital number, since it uses as much as digits as its factorization.

40231156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 40231156 is about 6342.8034811115. The cubic root of 40231156 is about 342.6527097089.

The spelling of 40231156 in words is "forty million, two hundred thirty-one thousand, one hundred fifty-six".