1312203023101 has 4 divisors (see below), whose sum is σ = 1315962917500. Its totient is φ = 1308443128704.

The previous prime is 1312203023093. The next prime is 1312203023111. The reversal of 1312203023101 is 1013203022131.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1009291483225 + 302911539876 = 1004635^2 + 550374^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312203023101 - 2³ = 1312203023093 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 (1312203023111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1879946676 + ... + 1879947373.

It is an arithmetic number, because the mean of its divisors is an integer number (328990729375).

Almost surely, 2^{1312203023101} is an apocalyptic number.

It is an amenable number.

1312203023101 is a deficient number, since it is larger than the sum of its proper divisors (3759894399).

1312203023101 is an equidigital number, since it uses as much as digits as its factorization.

1312203023101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759894398.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1312203023101 its reverse (1013203022131), we get a palindrome (2325406045232).

The spelling of 1312203023101 in words is "one trillion, three hundred twelve billion, two hundred three million, twenty-three thousand, one hundred one".