31424400404 has 24 divisors (see below), whose sum is σ = 55976686080. Its totient is φ = 15431556096.

The previous prime is 31424400401. The next prime is 31424400437. The reversal of 31424400404 is 40400442413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31424400401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195284 + ... + 317780.

It is an arithmetic number, because the mean of its divisors is an integer number (2332361920).

Almost surely, 2^31424400404 is an apocalyptic number.

It is an amenable number.

31424400404 is a deficient number, since it is larger than the sum of its proper divisors (24552285676).

31424400404 is a wasteful number, since it uses less digits than its factorization.

31424400404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123647 (or 123645 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 31424400404 its reverse (40400442413), we get a palindrome (71824842817).

The spelling of 31424400404 in words is "thirty-one billion, four hundred twenty-four million, four hundred thousand, four hundred four".