40431234 has 32 divisors (see below), whose sum is σ = 82861056. Its totient is φ = 13148240.

The previous prime is 40431199. The next prime is 40431241. The reversal of 40431234 is 43213404.

It is a self number, because there is not a number n which added to its sum of digits gives 40431234.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45139 + ... + 46025.

It is an arithmetic number, because the mean of its divisors is an integer number (2589408).

Almost surely, 2^40431234 is an apocalyptic number.

40431234 is an abundant number, since it is smaller than the sum of its proper divisors (42429822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40431234 is a wasteful number, since it uses less digits than its factorization.

40431234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1070.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 40431234 is about 6358.5559681425. Note that the first 3 decimals coincide. The cubic root of 40431234 is about 343.2197986579.

Adding to 40431234 its reverse (43213404), we get a palindrome (83644638).

The spelling of 40431234 in words is "forty million, four hundred thirty-one thousand, two hundred thirty-four".