40452331 has 4 divisors (see below), whose sum is σ = 42211152. Its totient is φ = 38693512.

The previous prime is 40452329. The next prime is 40452343. The reversal of 40452331 is 13325404.

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 40452331 - 2¹ = 40452329 is a prime.

It is a super-2 number, since 2×40452331² = 3272782166667122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40452131) 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, 879376 + ... + 879421.

It is an arithmetic number, because the mean of its divisors is an integer number (10552788).

Almost surely, 2^40452331 is an apocalyptic number.

40452331 is a deficient number, since it is larger than the sum of its proper divisors (1758821).

40452331 is a wasteful number, since it uses less digits than its factorization.

40452331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758820.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40452331 is about 6360.2146976340. The cubic root of 40452331 is about 343.2794855905.

Adding to 40452331 its reverse (13325404), we get a palindrome (53777735).

The spelling of 40452331 in words is "forty million, four hundred fifty-two thousand, three hundred thirty-one".