40012343231 has 32 divisors (see below), whose sum is σ = 48980090880. Its totient is φ = 31946926176.

The previous prime is 40012343221. The next prime is 40012343263. The reversal of 40012343231 is 13234321004.

It is a cyclic number.

It is not a de Polignac number, because 40012343231 - 2²⁶ = 39945234367 is a prime.

It is a super-2 number, since 2×40012343231² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 40012343197 and 40012343206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40012343201) 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 31 ways as a sum of consecutive naturals, for example, 996710 + ... + 1036076.

It is an arithmetic number, because the mean of its divisors is an integer number (1530627840).

Almost surely, 2^40012343231 is an apocalyptic number.

40012343231 is a deficient number, since it is larger than the sum of its proper divisors (8967747649).

40012343231 is a wasteful number, since it uses less digits than its factorization.

40012343231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39563.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 40012343231 its reverse (13234321004), we get a palindrome (53246664235).

The spelling of 40012343231 in words is "forty billion, twelve million, three hundred forty-three thousand, two hundred thirty-one".