31301212102 has 4 divisors (see below), whose sum is σ = 46951818156. Its totient is φ = 15650606050.

The previous prime is 31301212093. The next prime is 31301212133. The reversal of 31301212102 is 20121210313.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7825303024 + ... + 7825303027.

It is an arithmetic number, because the mean of its divisors is an integer number (11737954539).

Almost surely, 2^31301212102 is an apocalyptic number.

31301212102 is a deficient number, since it is larger than the sum of its proper divisors (15650606054).

31301212102 is a wasteful number, since it uses less digits than its factorization.

31301212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15650606053.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31301212102 its reverse (20121210313), we get a palindrome (51422422415).

The spelling of 31301212102 in words is "thirty-one billion, three hundred one million, two hundred twelve thousand, one hundred two".