201011231131 has 8 divisors (see below), whose sum is σ = 202256073360. Its totient is φ = 199766531232.

The previous prime is 201011231129. The next prime is 201011231147. The reversal of 201011231131 is 131132110102.

It is a happy number.

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 201011231131 - 2¹ = 201011231129 is a prime.

It is a super-2 number, since 2×201011231131² (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 (201011211131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4917405 + ... + 4958113.

It is an arithmetic number, because the mean of its divisors is an integer number (25282009170).

Almost surely, 2^201011231131 is an apocalyptic number.

201011231131 is a deficient number, since it is larger than the sum of its proper divisors (1244842229).

201011231131 is a wasteful number, since it uses less digits than its factorization.

201011231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71165.

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

Adding to 201011231131 its reverse (131132110102), we get a palindrome (332143341233).

The spelling of 201011231131 in words is "two hundred one billion, eleven million, two hundred thirty-one thousand, one hundred thirty-one".