40311431011 has 4 divisors (see below), whose sum is σ = 40727012872. Its totient is φ = 39895849152.

The previous prime is 40311430967. The next prime is 40311431021. The reversal of 40311431011 is 11013411304.

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 40311431011 - 2¹⁵ = 40311398243 is a prime.

It is a super-2 number, since 2×40311431011² (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 40311431011.

It is not an unprimeable number, because it can be changed into a prime (40311431021) 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, 207790785 + ... + 207790978.

It is an arithmetic number, because the mean of its divisors is an integer number (10181753218).

Almost surely, 2^40311431011 is an apocalyptic number.

40311431011 is a deficient number, since it is larger than the sum of its proper divisors (415581861).

40311431011 is an equidigital number, since it uses as much as digits as its factorization.

40311431011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415581860.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 40311431011 its reverse (11013411304), we get a palindrome (51324842315).

The spelling of 40311431011 in words is "forty billion, three hundred eleven million, four hundred thirty-one thousand, eleven".