40431322 has 4 divisors (see below), whose sum is σ = 60646986. Its totient is φ = 20215660.

The previous prime is 40431317. The next prime is 40431323. The reversal of 40431322 is 22313404.

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

It can be written as a sum of positive squares in only one way, i.e., 38551681 + 1879641 = 6209^2 + 1371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40431322.

It is not an unprimeable number, because it can be changed into a prime (40431323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107829 + ... + 10107832.

Almost surely, 2^40431322 is an apocalyptic number.

40431322 is a deficient number, since it is larger than the sum of its proper divisors (20215664).

40431322 is a wasteful number, since it uses less digits than its factorization.

40431322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20215663.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40431322 is about 6358.5628879488. The cubic root of 40431322 is about 343.2200476677.

Adding to 40431322 its reverse (22313404), we get a palindrome (62744726).

The spelling of 40431322 in words is "forty million, four hundred thirty-one thousand, three hundred twenty-two".