31331310201 has 12 divisors (see below), whose sum is σ = 45533985328. Its totient is φ = 20759394744.

The previous prime is 31331310193. The next prime is 31331310223. The reversal of 31331310201 is 10201313313.

It is a happy number.

31331310201 is a `hidden beast` number, since 3 + 1 + 331 + 310 + 20 + 1 = 666.

It is not a de Polignac number, because 31331310201 - 2³ = 31331310193 is a prime.

It is a super-2 number, since 2×31331310201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31331310001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10677235 + ... + 10680168.

Almost surely, 2^31331310201 is an apocalyptic number.

It is an amenable number.

31331310201 is a deficient number, since it is larger than the sum of its proper divisors (14202675127).

31331310201 is a wasteful number, since it uses less digits than its factorization.

31331310201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21357572 (or 21357569 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 18.

Adding to 31331310201 its reverse (10201313313), we get a palindrome (41532623514).

The spelling of 31331310201 in words is "thirty-one billion, three hundred thirty-one million, three hundred ten thousand, two hundred one".