40623231 has 16 divisors (see below), whose sum is σ = 59545728. Its totient is φ = 24429600.

The previous prime is 40623227. The next prime is 40623269. The reversal of 40623231 is 13232604.

It is a happy number.

It is not a de Polignac number, because 40623231 - 2² = 40623227 is a prime.

It is a super-2 number, since 2×40623231² = 3300493793758722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40623198 and 40623207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40623031) 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, 376 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (3721608).

Almost surely, 2^40623231 is an apocalyptic number.

40623231 is a deficient number, since it is larger than the sum of its proper divisors (18922497).

40623231 is a wasteful number, since it uses less digits than its factorization.

40623231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9542.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 40623231 is about 6373.6356187030. The cubic root of 40623231 is about 343.7622269590.

Adding to 40623231 its reverse (13232604), we get a palindrome (53855835).

The spelling of 40623231 in words is "forty million, six hundred twenty-three thousand, two hundred thirty-one".