40621331 has 8 divisors (see below), whose sum is σ = 41111040. Its totient is φ = 40134528.

The previous prime is 40621327. The next prime is 40621333. The reversal of 40621331 is 13312604.

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

It is a cyclic number.

It is not a de Polignac number, because 40621331 - 2² = 40621327 is a prime.

It is a super-2 number, since 2×40621331² = 3300185064423122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40621333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39755 + ... + 40763.

It is an arithmetic number, because the mean of its divisors is an integer number (5138880).

Almost surely, 2^40621331 is an apocalyptic number.

40621331 is a deficient number, since it is larger than the sum of its proper divisors (489709).

40621331 is a wasteful number, since it uses less digits than its factorization.

40621331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 40621331 is about 6373.4865654522. The cubic root of 40621331 is about 343.7568674771.

Adding to 40621331 its reverse (13312604), we get a palindrome (53933935).

The spelling of 40621331 in words is "forty million, six hundred twenty-one thousand, three hundred thirty-one".