1213131210311 has 8 divisors (see below), whose sum is σ = 1280459738880. Its totient is φ = 1146150633528.

The previous prime is 1213131210287. The next prime is 1213131210377. The reversal of 1213131210311 is 1130121313121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213131210311 - 2¹⁴ = 1213131193927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131210611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86980781 + ... + 86994726.

It is an arithmetic number, because the mean of its divisors is an integer number (160057467360).

Almost surely, 2^{1213131210311} is an apocalyptic number.

1213131210311 is a deficient number, since it is larger than the sum of its proper divisors (67328528569).

1213131210311 is a wasteful number, since it uses less digits than its factorization.

1213131210311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173975893.

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1213131210311 its reverse (1130121313121), we get a palindrome (2343252523432).

The spelling of 1213131210311 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, two hundred ten thousand, three hundred eleven".