40011232431 has 16 divisors (see below), whose sum is σ = 53602040960. Its totient is φ = 26547380640.

The previous prime is 40011232381. The next prime is 40011232433. The reversal of 40011232431 is 13423211004.

It is not a de Polignac number, because 40011232431 - 2¹¹ = 40011230383 is a prime.

It is a super-2 number, since 2×40011232431² (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 = 40011232398 and 40011232407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40011232433) 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, 2031276 + ... + 2050878.

It is an arithmetic number, because the mean of its divisors is an integer number (3350127560).

Almost surely, 2^40011232431 is an apocalyptic number.

40011232431 is a deficient number, since it is larger than the sum of its proper divisors (13590808529).

40011232431 is a wasteful number, since it uses less digits than its factorization.

40011232431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22806.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 40011232431 its reverse (13423211004), we get a palindrome (53434443435).

The spelling of 40011232431 in words is "forty billion, eleven million, two hundred thirty-two thousand, four hundred thirty-one".