40380231 has 16 divisors (see below), whose sum is σ = 54996480. Its totient is φ = 26346720.

The previous prime is 40380217. The next prime is 40380233. The reversal of 40380231 is 13208304.

It is a happy number.

It is not a de Polignac number, because 40380231 - 2⁵ = 40380199 is a prime.

It is a super-2 number, since 2×40380231² = 3261126111226722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40380198 and 40380207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40380233) 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, 47710 + ... + 48548.

It is an arithmetic number, because the mean of its divisors is an integer number (3437280).

Almost surely, 2^40380231 is an apocalyptic number.

40380231 is a deficient number, since it is larger than the sum of its proper divisors (14616249).

40380231 is a wasteful number, since it uses less digits than its factorization.

40380231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1166.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40380231 is about 6354.5441221224. The cubic root of 40380231 is about 343.0754168386.

Adding to 40380231 its reverse (13208304), we get a palindrome (53588535).

The spelling of 40380231 in words is "forty million, three hundred eighty thousand, two hundred thirty-one".