40243212031 has 8 divisors (see below), whose sum is σ = 44034323328. Its totient is φ = 36474207000.

The previous prime is 40243212019. The next prime is 40243212049. The reversal of 40243212031 is 13021234204.

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

It is a de Polignac number, because none of the positive numbers 2^k-40243212031 is a prime.

It is a super-2 number, since 2×40243212031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40243211993 and 40243212011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40243212431) 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, 5522755 + ... + 5530036.

It is an arithmetic number, because the mean of its divisors is an integer number (5504290416).

Almost surely, 2^40243212031 is an apocalyptic number.

40243212031 is a deficient number, since it is larger than the sum of its proper divisors (3791111297).

40243212031 is a wasteful number, since it uses less digits than its factorization.

40243212031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11053133.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 40243212031 its reverse (13021234204), we get a palindrome (53264446235).

The spelling of 40243212031 in words is "forty billion, two hundred forty-three million, two hundred twelve thousand, thirty-one".