201023002131 has 8 divisors (see below), whose sum is σ = 306320765184. Its totient is φ = 114870286920.

The previous prime is 201023002129. The next prime is 201023002139. The reversal of 201023002131 is 131200320102.

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

It is not a de Polignac number, because 201023002131 - 2¹ = 201023002129 is a prime.

It is a super-2 number, since 2×201023002131² (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 201023002131.

It is not an unprimeable number, because it can be changed into a prime (201023002139) 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, 4786261935 + ... + 4786261976.

It is an arithmetic number, because the mean of its divisors is an integer number (38290095648).

Almost surely, 2^201023002131 is an apocalyptic number.

201023002131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

201023002131 is a deficient number, since it is larger than the sum of its proper divisors (105297763053).

201023002131 is an equidigital number, since it uses as much as digits as its factorization.

201023002131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9572523921.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 201023002131 its reverse (131200320102), we get a palindrome (332223322233).

The spelling of 201023002131 in words is "two hundred one billion, twenty-three million, two thousand, one hundred thirty-one".