31310211130001 has 4 divisors (see below), whose sum is σ = 31310470147812. Its totient is φ = 31309952112192.

The previous prime is 31310211129997. The next prime is 31310211130007. The reversal of 31310211130001 is 10003111201313.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11193407379025 + 20116803750976 = 3345655^2 + 4485176^2 .

It is a cyclic number.

It is not a de Polignac number, because 31310211130001 - 2² = 31310211129997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (31310211130007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129327500 + ... + 129569373.

It is an arithmetic number, because the mean of its divisors is an integer number (7827617536953).

Almost surely, 2^{31310211130001} is an apocalyptic number.

It is an amenable number.

31310211130001 is a deficient number, since it is larger than the sum of its proper divisors (259017811).

31310211130001 is a wasteful number, since it uses less digits than its factorization.

31310211130001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259017810.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 31310211130001 its reverse (10003111201313), we get a palindrome (41313322331314).

The spelling of 31310211130001 in words is "thirty-one trillion, three hundred ten billion, two hundred eleven million, one hundred thirty thousand, one".