31423431404 has 12 divisors (see below), whose sum is σ = 57381918384. Its totient is φ = 15028597584.

The previous prime is 31423431379. The next prime is 31423431419. The reversal of 31423431404 is 40413432413.

It is a happy number.

It is a super-2 number, since 2×31423431404² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170779427 + ... + 170779610.

It is an arithmetic number, because the mean of its divisors is an integer number (4781826532).

Almost surely, 2^31423431404 is an apocalyptic number.

It is an amenable number.

31423431404 is a deficient number, since it is larger than the sum of its proper divisors (25958486980).

31423431404 is a wasteful number, since it uses less digits than its factorization.

31423431404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341559064 (or 341559062 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 31423431404 its reverse (40413432413), we get a palindrome (71836863817).

The spelling of 31423431404 in words is "thirty-one billion, four hundred twenty-three million, four hundred thirty-one thousand, four hundred four".