1201310211131 has 12 divisors (see below), whose sum is σ = 1245529637664. Its totient is φ = 1158611781600.

The previous prime is 1201310211103. The next prime is 1201310211133. The reversal of 1201310211131 is 1311120131021.

It is a de Polignac number, because none of the positive numbers 2^k-1201310211131 is a prime.

It is a super-2 number, since 2×1201310211131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1201310211133) 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 11 ways as a sum of consecutive naturals, for example, 17840 + ... + 1550141.

It is an arithmetic number, because the mean of its divisors is an integer number (103794136472).

Almost surely, 2^{1201310211131} is an apocalyptic number.

1201310211131 is a deficient number, since it is larger than the sum of its proper divisors (44219426533).

1201310211131 is an equidigital number, since it uses as much as digits as its factorization.

1201310211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568950 (or 1568921 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1201310211131 its reverse (1311120131021), we get a palindrome (2512430342152).

The spelling of 1201310211131 in words is "one trillion, two hundred one billion, three hundred ten million, two hundred eleven thousand, one hundred thirty-one".