201023213131 has 16 divisors (see below), whose sum is σ = 219633942528. Its totient is φ = 182864455200.

The previous prime is 201023213129. The next prime is 201023213137. The reversal of 201023213131 is 131312320102.

It is a cyclic number.

It is not a de Polignac number, because 201023213131 - 2¹ = 201023213129 is a prime.

It is a super-2 number, since 2×201023213131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201023213099 and 201023213108.

It is not an unprimeable number, because it can be changed into a prime (201023213137) 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 15 ways as a sum of consecutive naturals, for example, 2063286 + ... + 2158516.

It is an arithmetic number, because the mean of its divisors is an integer number (13727121408).

Almost surely, 2^201023213131 is an apocalyptic number.

201023213131 is a deficient number, since it is larger than the sum of its proper divisors (18610729397).

201023213131 is a wasteful number, since it uses less digits than its factorization.

201023213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97602.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201023213131 its reverse (131312320102), we get a palindrome (332335533233).

The spelling of 201023213131 in words is "two hundred one billion, twenty-three million, two hundred thirteen thousand, one hundred thirty-one".