40245317231 has 4 divisors (see below), whose sum is σ = 45994648272. Its totient is φ = 34495986192.

The previous prime is 40245317219. The next prime is 40245317257. The reversal of 40245317231 is 13271354204.

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 40245317231 - 2³⁴ = 23065448047 is a prime.

It is a super-2 number, since 2×40245317231² (a number of 22 digits) 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 (40245317201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2874665510 + ... + 2874665523.

It is an arithmetic number, because the mean of its divisors is an integer number (11498662068).

Almost surely, 2^40245317231 is an apocalyptic number.

40245317231 is a deficient number, since it is larger than the sum of its proper divisors (5749331041).

40245317231 is an equidigital number, since it uses as much as digits as its factorization.

40245317231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749331040.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 40245317231 in words is "forty billion, two hundred forty-five million, three hundred seventeen thousand, two hundred thirty-one".