40245031 has 4 divisors (see below), whose sum is σ = 40259992. Its totient is φ = 40230072.

The previous prime is 40245017. The next prime is 40245047. The reversal of 40245031 is 13054204.

40245031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40245031 - 2¹³ = 40236839 is a prime.

It is a super-2 number, since 2×40245031² = 3239325040381922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2205 + ... + 9238.

It is an arithmetic number, because the mean of its divisors is an integer number (10064998).

Almost surely, 2^40245031 is an apocalyptic number.

40245031 is a deficient number, since it is larger than the sum of its proper divisors (14961).

40245031 is a wasteful number, since it uses less digits than its factorization.

40245031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14960.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40245031 is about 6343.8971460767. The cubic root of 40245031 is about 342.6920967609.

Adding to 40245031 its reverse (13054204), we get a palindrome (53299235).

The spelling of 40245031 in words is "forty million, two hundred forty-five thousand, thirty-one".