40331263243 has 16 divisors (see below), whose sum is σ = 41640842880. Its totient is φ = 39044468736.

The previous prime is 40331263213. The next prime is 40331263261. The reversal of 40331263243 is 34236213304.

It is a cyclic number.

It is not a de Polignac number, because 40331263243 - 2²⁵ = 40297708811 is a prime.

It is a super-2 number, since 2×40331263243² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40331263213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1720878 + ... + 1744156.

It is an arithmetic number, because the mean of its divisors is an integer number (2602552680).

Almost surely, 2^40331263243 is an apocalyptic number.

40331263243 is a deficient number, since it is larger than the sum of its proper divisors (1309579637).

40331263243 is a wasteful number, since it uses less digits than its factorization.

40331263243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23766.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 40331263243 its reverse (34236213304), we get a palindrome (74567476547).

The spelling of 40331263243 in words is "forty billion, three hundred thirty-one million, two hundred sixty-three thousand, two hundred forty-three".