400310223012 has 144 divisors (see below), whose sum is σ = 1207867993920. Its totient is φ = 114319102464.

The previous prime is 400310223007. The next prime is 400310223067. The reversal of 400310223012 is 210322013004.

400310223012 is a `hidden beast` number, since 400 + 31 + 0 + 2 + 230 + 1 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11641108 + ... + 11675444.

It is an arithmetic number, because the mean of its divisors is an integer number (8387972180).

Almost surely, 2^400310223012 is an apocalyptic number.

400310223012 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400310223012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (603933996960).

400310223012 is an abundant number, since it is smaller than the sum of its proper divisors (807557770908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400310223012 is a wasteful number, since it uses less digits than its factorization.

400310223012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36567 (or 36552 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 400310223012 its reverse (210322013004), we get a palindrome (610632236016).

The spelling of 400310223012 in words is "four hundred billion, three hundred ten million, two hundred twenty-three thousand, twelve".