31201012312102 has 32 divisors (see below), whose sum is σ = 47553706252800. Its totient is φ = 15351165150048.

The previous prime is 31201012312051. The next prime is 31201012312111. The reversal of 31201012312102 is 20121321010213.

It is a self number, because there is not a number n which added to its sum of digits gives 31201012312102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85803273 + ... + 86166139.

It is an arithmetic number, because the mean of its divisors is an integer number (1486053320400).

Almost surely, 2^{31201012312102} is an apocalyptic number.

31201012312102 is a deficient number, since it is larger than the sum of its proper divisors (16352693940698).

31201012312102 is a wasteful number, since it uses less digits than its factorization.

31201012312102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364780.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 31201012312102 its reverse (20121321010213), we get a palindrome (51322333322315).

The spelling of 31201012312102 in words is "thirty-one trillion, two hundred one billion, twelve million, three hundred twelve thousand, one hundred two".