40151223 has 12 divisors (see below), whose sum is σ = 66281488. Its totient is φ = 22943520.

The previous prime is 40151219. The next prime is 40151239. The reversal of 40151223 is 32215104.

40151223 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40151223 - 2² = 40151219 is a prime.

It is a super-2 number, since 2×40151223² = 3224241416791458, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40151196 and 40151205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40151203) 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 11 ways as a sum of consecutive naturals, for example, 318598 + ... + 318723.

Almost surely, 2^40151223 is an apocalyptic number.

40151223 is a deficient number, since it is larger than the sum of its proper divisors (26130265).

40151223 is a wasteful number, since it uses less digits than its factorization.

40151223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637334 (or 637331 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 40151223 is about 6336.4992701017. The cubic root of 40151223 is about 342.4256268441.

Adding to 40151223 its reverse (32215104), we get a palindrome (72366327).

The spelling of 40151223 in words is "forty million, one hundred fifty-one thousand, two hundred twenty-three".