40431155 has 8 divisors (see below), whose sum is σ = 48553584. Its totient is φ = 32320800.

The previous prime is 40431119. The next prime is 40431199. The reversal of 40431155 is 55113404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 40431155 - 2²⁰ = 39382579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40431155.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8045 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (6069198).

Almost surely, 2^40431155 is an apocalyptic number.

40431155 is a deficient number, since it is larger than the sum of its proper divisors (8122429).

40431155 is a wasteful number, since it uses less digits than its factorization.

40431155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6037.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 40431155 is about 6358.5497560371. The cubic root of 40431155 is about 343.2195751147.

Adding to 40431155 its reverse (55113404), we get a palindrome (95544559).

The spelling of 40431155 in words is "forty million, four hundred thirty-one thousand, one hundred fifty-five".