201011310231 has 4 divisors (see below), whose sum is σ = 268015080312. Its totient is φ = 134007540152.

The previous prime is 201011310211. The next prime is 201011310251. The reversal of 201011310231 is 132013110102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (201011310211) and next prime (201011310251).

It is a cyclic number.

It is not a de Polignac number, because 201011310231 - 2³¹ = 198863826583 is a prime.

It is a super-2 number, since 2×201011310231² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 201011310231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011310211) 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, 33501885036 + ... + 33501885041.

It is an arithmetic number, because the mean of its divisors is an integer number (67003770078).

Almost surely, 2^201011310231 is an apocalyptic number.

201011310231 is a deficient number, since it is larger than the sum of its proper divisors (67003770081).

201011310231 is an equidigital number, since it uses as much as digits as its factorization.

201011310231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67003770080.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 201011310231 its reverse (132013110102), we get a palindrome (333024420333).

The spelling of 201011310231 in words is "two hundred one billion, eleven million, three hundred ten thousand, two hundred thirty-one".