31324211312420 has 48 divisors (see below), whose sum is σ = 70858537525440. Its totient is φ = 11562984456576.

The previous prime is 31324211312419. The next prime is 31324211312431. The reversal of 31324211312420 is 2421311242313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13943582 + ... + 16033461.

It is an arithmetic number, because the mean of its divisors is an integer number (1476219531780).

Almost surely, 2^{31324211312420} is an apocalyptic number.

It is an amenable number.

31324211312420 is an abundant number, since it is smaller than the sum of its proper divisors (39534326213020).

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

31324211312420 is a wasteful number, since it uses less digits than its factorization.

31324211312420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29981084 (or 29981082 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 31324211312420 its reverse (2421311242313), we get a palindrome (33745522554733).

The spelling of 31324211312420 in words is "thirty-one trillion, three hundred twenty-four billion, two hundred eleven million, three hundred twelve thousand, four hundred twenty".