40210443431 has 4 divisors (see below), whose sum is σ = 40457133432. Its totient is φ = 39963753432.

The previous prime is 40210443419. The next prime is 40210443461. The reversal of 40210443431 is 13434401204.

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 40210443431 - 2¹⁸ = 40210181287 is a prime.

It is a super-2 number, since 2×40210443431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40210443431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40210443461) 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, 123344756 + ... + 123345081.

It is an arithmetic number, because the mean of its divisors is an integer number (10114283358).

Almost surely, 2^40210443431 is an apocalyptic number.

40210443431 is a deficient number, since it is larger than the sum of its proper divisors (246690001).

40210443431 is a wasteful number, since it uses less digits than its factorization.

40210443431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246690000.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 40210443431 its reverse (13434401204), we get a palindrome (53644844635).

The spelling of 40210443431 in words is "forty billion, two hundred ten million, four hundred forty-three thousand, four hundred thirty-one".