400231534012 has 48 divisors (see below), whose sum is σ = 748858727232. Its totient is φ = 186702686720.

The previous prime is 400231534009. The next prime is 400231534037. The reversal of 400231534012 is 210435132004.

It is a super-3 number, since 3×400231534012³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20649558 + ... + 20668930.

It is an arithmetic number, because the mean of its divisors is an integer number (15601223484).

Almost surely, 2^400231534012 is an apocalyptic number.

It is an amenable number.

400231534012 is a deficient number, since it is larger than the sum of its proper divisors (348627193220).

400231534012 is a wasteful number, since it uses less digits than its factorization.

400231534012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24918 (or 24916 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 400231534012 its reverse (210435132004), we get a palindrome (610666666016).

The spelling of 400231534012 in words is "four hundred billion, two hundred thirty-one million, five hundred thirty-four thousand, twelve".