1210323012311 has 24 divisors (see below), whose sum is σ = 1444012402896. Its totient is φ = 1010891575680.

The previous prime is 1210323012307. The next prime is 1210323012317. The reversal of 1210323012311 is 1132103230121.

It is a happy number.

It is not a de Polignac number, because 1210323012311 - 2² = 1210323012307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210323012317) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1297205 + ... + 2025681.

It is an arithmetic number, because the mean of its divisors is an integer number (60167183454).

Almost surely, 2^{1210323012311} is an apocalyptic number.

1210323012311 is a deficient number, since it is larger than the sum of its proper divisors (233689390585).

1210323012311 is an equidigital number, since it uses as much as digits as its factorization.

1210323012311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729359 (or 729352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1210323012311 its reverse (1132103230121), we get a palindrome (2342426242432).

The spelling of 1210323012311 in words is "one trillion, two hundred ten billion, three hundred twenty-three million, twelve thousand, three hundred eleven".