400011012231 has 32 divisors (see below), whose sum is σ = 565774917120. Its totient is φ = 250519535616.

The previous prime is 400011012229. The next prime is 400011012251. The reversal of 400011012231 is 132210110004.

It is not a de Polignac number, because 400011012231 - 2¹ = 400011012229 is a prime.

It is a super-2 number, since 2×400011012231² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400011012231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400011012221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113412190 + ... + 113415716.

It is an arithmetic number, because the mean of its divisors is an integer number (17680466160).

Almost surely, 2^400011012231 is an apocalyptic number.

400011012231 is a deficient number, since it is larger than the sum of its proper divisors (165763904889).

400011012231 is a wasteful number, since it uses less digits than its factorization.

400011012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7063.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 400011012231 its reverse (132210110004), we get a palindrome (532221122235).

The spelling of 400011012231 in words is "four hundred billion, eleven million, twelve thousand, two hundred thirty-one".