31321002000012 has 24 divisors (see below), whose sum is σ = 73138254133056. Its totient is φ = 10432345981008.

The previous prime is 31321001999977. The next prime is 31321002000023. The reversal of 31321002000012 is 21000020012313.

It is a junction number, because it is equal to n+sod(n) for n = 31321001999955 and 31321002000000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 998486038 + ... + 998517405.

It is an arithmetic number, because the mean of its divisors is an integer number (3047427255544).

Almost surely, 2^{31321002000012} is an apocalyptic number.

It is an amenable number.

31321002000012 is an abundant number, since it is smaller than the sum of its proper divisors (41817252133044).

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

31321002000012 is a wasteful number, since it uses less digits than its factorization.

31321002000012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997004757 (or 1997004755 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 31321002000012 its reverse (21000020012313), we get a palindrome (52321022012325).

The spelling of 31321002000012 in words is "thirty-one trillion, three hundred twenty-one billion, two million, twelve", and thus it is an aban number.