31143403324 has 12 divisors (see below), whose sum is σ = 59455588248. Its totient is φ = 14156092400.

The previous prime is 31143403309. The next prime is 31143403331. The reversal of 31143403324 is 42330434113.

It is a junction number, because it is equal to n+sod(n) for n = 31143403292 and 31143403301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 353902267 + ... + 353902354.

It is an arithmetic number, because the mean of its divisors is an integer number (4954632354).

Almost surely, 2^31143403324 is an apocalyptic number.

It is an amenable number.

31143403324 is a deficient number, since it is larger than the sum of its proper divisors (28312184924).

31143403324 is a wasteful number, since it uses less digits than its factorization.

31143403324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 707804636 (or 707804634 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 31143403324 its reverse (42330434113), we get a palindrome (73473837437).

The spelling of 31143403324 in words is "thirty-one billion, one hundred forty-three million, four hundred three thousand, three hundred twenty-four".