31212244002340 has 24 divisors (see below), whose sum is σ = 65579656407552. Its totient is φ = 12478432076640.

The previous prime is 31212244002301. The next prime is 31212244002341. The reversal of 31212244002340 is 4320044221213.

It is a junction number, because it is equal to n+sod(n) for n = 31212244002299 and 31212244002308.

It is not an unprimeable number, because it can be changed into a prime (31212244002341) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404055684 + ... + 404132923.

It is an arithmetic number, because the mean of its divisors is an integer number (2732485683648).

Almost surely, 2^{31212244002340} is an apocalyptic number.

It is an amenable number.

31212244002340 is an abundant number, since it is smaller than the sum of its proper divisors (34367412405212).

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

31212244002340 is a wasteful number, since it uses less digits than its factorization.

31212244002340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808190547 (or 808190545 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 31212244002340 its reverse (4320044221213), we get a palindrome (35532288223553).

The spelling of 31212244002340 in words is "thirty-one trillion, two hundred twelve billion, two hundred forty-four million, two thousand, three hundred forty".