31213021301 has 16 divisors (see below), whose sum is σ = 38975707008. Its totient is φ = 24283852800.

The previous prime is 31213021283. The next prime is 31213021313. The reversal of 31213021301 is 10312031213.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31213021301 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31213021301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213021361) by changing a digit.

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, 266840 + ... + 365553.

It is an arithmetic number, because the mean of its divisors is an integer number (2435981688).

Almost surely, 2^31213021301 is an apocalyptic number.

It is an amenable number.

31213021301 is a deficient number, since it is larger than the sum of its proper divisors (7762685707).

31213021301 is a wasteful number, since it uses less digits than its factorization.

31213021301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633052.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31213021301 its reverse (10312031213), we get a palindrome (41525052514).

The spelling of 31213021301 in words is "thirty-one billion, two hundred thirteen million, twenty-one thousand, three hundred one".