400304331234 has 128 divisors (see below), whose sum is σ = 970272172800. Its totient is φ = 121836072960.

The previous prime is 400304331227. The next prime is 400304331239. The reversal of 400304331234 is 432133403004.

400304331234 is a `hidden beast` number, since 4 + 0 + 0 + 304 + 331 + 23 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 400304331198 and 400304331207.

It is not an unprimeable number, because it can be changed into a prime (400304331239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6707494 + ... + 6766910.

It is an arithmetic number, because the mean of its divisors is an integer number (7580251350).

Almost surely, 2^400304331234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400304331234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (485136086400).

400304331234 is an abundant number, since it is smaller than the sum of its proper divisors (569967841566).

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

400304331234 is a wasteful number, since it uses less digits than its factorization.

400304331234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59665 (or 59659 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 27.

Adding to 400304331234 its reverse (432133403004), we get a palindrome (832437734238).

The spelling of 400304331234 in words is "four hundred billion, three hundred four million, three hundred thirty-one thousand, two hundred thirty-four".