40232231 has 4 divisors (see below), whose sum is σ = 43327032. Its totient is φ = 37137432.

The previous prime is 40232207. The next prime is 40232233. The reversal of 40232231 is 13223204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40232231 - 2⁶ = 40232167 is a prime.

It is a super-2 number, since 2×40232231² = 3237264822474722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40232233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1547381 + ... + 1547406.

It is an arithmetic number, because the mean of its divisors is an integer number (10831758).

Almost surely, 2^40232231 is an apocalyptic number.

40232231 is a deficient number, since it is larger than the sum of its proper divisors (3094801).

40232231 is a wasteful number, since it uses less digits than its factorization.

40232231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3094800.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 40232231 is about 6342.8882222533. Note that the first 3 decimals coincide. The cubic root of 40232231 is about 342.6557616420.

Adding to 40232231 its reverse (13223204), we get a palindrome (53455435).

The spelling of 40232231 in words is "forty million, two hundred thirty-two thousand, two hundred thirty-one".