40343232431 has 4 divisors (see below), whose sum is σ = 40426073232. Its totient is φ = 40260391632.

The previous prime is 40343232337. The next prime is 40343232443. The reversal of 40343232431 is 13423234304.

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 40343232431 - 2¹⁴ = 40343216047 is a prime.

It is a super-2 number, since 2×40343232431² (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 = 40343232394 and 40343232403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40343232451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41419670 + ... + 41420643.

It is an arithmetic number, because the mean of its divisors is an integer number (10106518308).

Almost surely, 2^40343232431 is an apocalyptic number.

40343232431 is a deficient number, since it is larger than the sum of its proper divisors (82840801).

40343232431 is an equidigital number, since it uses as much as digits as its factorization.

40343232431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82840800.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 40343232431 its reverse (13423234304), we get a palindrome (53766466735).

The spelling of 40343232431 in words is "forty billion, three hundred forty-three million, two hundred thirty-two thousand, four hundred thirty-one".