31001313130201 has 4 divisors (see below), whose sum is σ = 31001337960372. Its totient is φ = 31001288300032.

The previous prime is 31001313130199. The next prime is 31001313130213. The reversal of 31001313130201 is 10203131310013.

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 26356426090201 + 4644887040000 = 5133851^2 + 2155200^2 .

It is a cyclic number.

It is not a de Polignac number, because 31001313130201 - 2¹ = 31001313130199 is a prime.

It is a super-2 number, since 2×31001313130201² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31001313130301) 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, 10437256 + ... + 13074361.

It is an arithmetic number, because the mean of its divisors is an integer number (7750334490093).

Almost surely, 2^{31001313130201} is an apocalyptic number.

It is an amenable number.

31001313130201 is a deficient number, since it is larger than the sum of its proper divisors (24830171).

31001313130201 is a wasteful number, since it uses less digits than its factorization.

31001313130201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24830170.

The product of its (nonzero) digits is 162, while the sum is 19.

Adding to 31001313130201 its reverse (10203131310013), we get a palindrome (41204444440214).

The spelling of 31001313130201 in words is "thirty-one trillion, one billion, three hundred thirteen million, one hundred thirty thousand, two hundred one".