31321100121302 has 16 divisors (see below), whose sum is σ = 47070659328000. Its totient is φ = 15630900595560.

The previous prime is 31321100121221. The next prime is 31321100121329. The reversal of 31321100121302 is 20312100112313.

It is a happy number.

It is a super-2 number, since 2×31321100121302² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1966802 + ... + 8155397.

It is an arithmetic number, because the mean of its divisors is an integer number (2941916208000).

Almost surely, 2^{31321100121302} is an apocalyptic number.

31321100121302 is a deficient number, since it is larger than the sum of its proper divisors (15749559206698).

31321100121302 is a wasteful number, since it uses less digits than its factorization.

31321100121302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10125131.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 31321100121302 its reverse (20312100112313), we get a palindrome (51633200233615).

The spelling of 31321100121302 in words is "thirty-one trillion, three hundred twenty-one billion, one hundred million, one hundred twenty-one thousand, three hundred two".