201311012131 has 8 divisors (see below), whose sum is σ = 220502934720. Its totient is φ = 182935767168.

The previous prime is 201311012069. The next prime is 201311012143. The reversal of 201311012131 is 131210113102.

It is a happy number.

201311012131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201311012131 - 2¹³ = 201311003939 is a prime.

It is a super-2 number, since 2×201311012131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201311012171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 204168891 + ... + 204169876.

It is an arithmetic number, because the mean of its divisors is an integer number (27562866840).

Almost surely, 2^201311012131 is an apocalyptic number.

201311012131 is a deficient number, since it is larger than the sum of its proper divisors (19191922589).

201311012131 is a wasteful number, since it uses less digits than its factorization.

201311012131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408338813.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 201311012131 its reverse (131210113102), we get a palindrome (332521125233).

The spelling of 201311012131 in words is "two hundred one billion, three hundred eleven million, twelve thousand, one hundred thirty-one".