1312312021041 has 16 divisors (see below), whose sum is σ = 2104961638400. Its totient is φ = 710424552528.

The previous prime is 1312312021037. The next prime is 1312312021051. The reversal of 1312312021041 is 1401202132131.

It is not a de Polignac number, because 1312312021041 - 2² = 1312312021037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312312020999 and 1312312021017.

It is not an unprimeable number, because it can be changed into a prime (1312312021051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1644500881 + ... + 1644501678.

It is an arithmetic number, because the mean of its divisors is an integer number (131560102400).

Almost surely, 2^{1312312021041} is an apocalyptic number.

It is an amenable number.

1312312021041 is a deficient number, since it is larger than the sum of its proper divisors (792649617359).

1312312021041 is a wasteful number, since it uses less digits than its factorization.

1312312021041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3289002588.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 1312312021041 its reverse (1401202132131), we get a palindrome (2713514153172).

The spelling of 1312312021041 in words is "one trillion, three hundred twelve billion, three hundred twelve million, twenty-one thousand, forty-one".