31220201143102 has 12 divisors (see below), whose sum is σ = 47637488770056. Its totient is φ = 15345522592340.

The previous prime is 31220201143099. The next prime is 31220201143181. The reversal of 31220201143102 is 20134110202213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2242179274 + ... + 2242193197.

It is an arithmetic number, because the mean of its divisors is an integer number (3969790730838).

Almost surely, 2^{31220201143102} is an apocalyptic number.

31220201143102 is a deficient number, since it is larger than the sum of its proper divisors (16417287626954).

31220201143102 is an equidigital number, since it uses as much as digits as its factorization.

31220201143102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484372591 (or 4484372532 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31220201143102 its reverse (20134110202213), we get a palindrome (51354311345315).

The spelling of 31220201143102 in words is "thirty-one trillion, two hundred twenty billion, two hundred one million, one hundred forty-three thousand, one hundred two".