201310123011 has 8 divisors (see below), whose sum is σ = 272813718864. Its totient is φ = 132006637920.

The previous prime is 201310122953. The next prime is 201310123013. The reversal of 201310123011 is 110321013102.

It is a happy number.

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

It is not a de Polignac number, because 201310123011 - 2⁷ = 201310122883 is a prime.

It is a super-2 number, since 2×201310123011² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201310123013) 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, 550027476 + ... + 550027841.

It is an arithmetic number, because the mean of its divisors is an integer number (34101714858).

Almost surely, 2^201310123011 is an apocalyptic number.

201310123011 is a deficient number, since it is larger than the sum of its proper divisors (71503595853).

201310123011 is a wasteful number, since it uses less digits than its factorization.

201310123011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100055381.

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

Adding to 201310123011 its reverse (110321013102), we get a palindrome (311631136113).

The spelling of 201310123011 in words is "two hundred one billion, three hundred ten million, one hundred twenty-three thousand, eleven".