201030331131 has 72 divisors (see below), whose sum is σ = 340287948000. Its totient is φ = 114026330880.

The previous prime is 201030331123. The next prime is 201030331147. The reversal of 201030331131 is 131133030102.

It is a happy number.

201030331131 is a `hidden beast` number, since 20 + 1 + 0 + 303 + 311 + 31 = 666.

It is not a de Polignac number, because 201030331131 - 2³ = 201030331123 is a prime.

It is a super-3 number, since 3×201030331131³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (201030331631) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 40454415 + ... + 40459383.

It is an arithmetic number, because the mean of its divisors is an integer number (4726221500).

Almost surely, 2^201030331131 is an apocalyptic number.

201030331131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201030331131 is a deficient number, since it is larger than the sum of its proper divisors (139257616869).

201030331131 is a wasteful number, since it uses less digits than its factorization.

201030331131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649 (or 5639 counting only the distinct ones).

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

Adding to 201030331131 its reverse (131133030102), we get a palindrome (332163361233).

The spelling of 201030331131 in words is "two hundred one billion, thirty million, three hundred thirty-one thousand, one hundred thirty-one".