31403044012 has 6 divisors (see below), whose sum is σ = 54955327028. Its totient is φ = 15701522004.

The previous prime is 31403044009. The next prime is 31403044039. The reversal of 31403044012 is 21044030413.

It is a super-2 number, since 2×31403044012² (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 as a sum of consecutive naturals, namely, 3925380498 + ... + 3925380505.

Almost surely, 2^31403044012 is an apocalyptic number.

It is an amenable number.

31403044012 is a deficient number, since it is larger than the sum of its proper divisors (23552283016).

31403044012 is a wasteful number, since it uses less digits than its factorization.

31403044012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7850761007 (or 7850761005 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 31403044012 its reverse (21044030413), we get a palindrome (52447074425).

The spelling of 31403044012 in words is "thirty-one billion, four hundred three million, forty-four thousand, twelve".