400030311504 has 20 divisors (see below), whose sum is σ = 1033411638176. Its totient is φ = 133343437152.

The previous prime is 400030311503. The next prime is 400030311521. The reversal of 400030311504 is 405113030004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400030311503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4166982364 + ... + 4166982459.

Almost surely, 2^400030311504 is an apocalyptic number.

It is an amenable number.

400030311504 is an abundant number, since it is smaller than the sum of its proper divisors (633381326672).

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

400030311504 is a wasteful number, since it uses less digits than its factorization.

400030311504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8333964834 (or 8333964828 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 400030311504 its reverse (405113030004), we get a palindrome (805143341508).

The spelling of 400030311504 in words is "four hundred billion, thirty million, three hundred eleven thousand, five hundred four".