400240526311 has 16 divisors (see below), whose sum is σ = 414634479840. Its totient is φ = 385886551680.

The previous prime is 400240526297. The next prime is 400240526317. The reversal of 400240526311 is 113625042004.

It is a cyclic number.

It is not a de Polignac number, because 400240526311 - 2¹⁹ = 400240002023 is a prime.

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 400240526311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400240526317) 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, 77011165 + ... + 77016361.

It is an arithmetic number, because the mean of its divisors is an integer number (25914654990).

Almost surely, 2^400240526311 is an apocalyptic number.

400240526311 is a deficient number, since it is larger than the sum of its proper divisors (14393953529).

400240526311 is a wasteful number, since it uses less digits than its factorization.

400240526311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8514.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 400240526311 its reverse (113625042004), we get a palindrome (513865568315).

The spelling of 400240526311 in words is "four hundred billion, two hundred forty million, five hundred twenty-six thousand, three hundred eleven".