31020223002102 has 64 divisors (see below), whose sum is σ = 69480531394560. Its totient is φ = 10258078142592.

The previous prime is 31020223002079. The next prime is 31020223002143. The reversal of 31020223002102 is 20120032202013.

31020223002102 is a `hidden beast` number, since 310 + 20 + 2 + 230 + 0 + 2 + 102 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131439118 + ... + 131674910.

It is an arithmetic number, because the mean of its divisors is an integer number (1085633303040).

Almost surely, 2^{31020223002102} is an apocalyptic number.

31020223002102 is an abundant number, since it is smaller than the sum of its proper divisors (38460308392458).

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

31020223002102 is a wasteful number, since it uses less digits than its factorization.

31020223002102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255114 (or 255108 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 31020223002102 its reverse (20120032202013), we get a palindrome (51140255204115).

The spelling of 31020223002102 in words is "thirty-one trillion, twenty billion, two hundred twenty-three million, two thousand, one hundred two".