400023131012 has 48 divisors (see below), whose sum is σ = 760976899200. Its totient is φ = 183485533440.

The previous prime is 400023130979. The next prime is 400023131041. The reversal of 400023131012 is 210131320004.

It is a super-3 number, since 3×400023131012³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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, 676187 + ... + 1121282.

It is an arithmetic number, because the mean of its divisors is an integer number (15853685400).

Almost surely, 2^400023131012 is an apocalyptic number.

It is an amenable number.

400023131012 is a deficient number, since it is larger than the sum of its proper divisors (360953768188).

400023131012 is a wasteful number, since it uses less digits than its factorization.

400023131012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1797596 (or 1797594 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 400023131012 its reverse (210131320004), we get a palindrome (610154451016).

The spelling of 400023131012 in words is "four hundred billion, twenty-three million, one hundred thirty-one thousand, twelve".