1202323111313 has 4 divisors (see below), whose sum is σ = 1202330791860. Its totient is φ = 1202315430768.

The previous prime is 1202323111303. The next prime is 1202323111343. The reversal of 1202323111313 is 3131113232021.

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 901878806929 + 300444304384 = 949673^2 + 548128^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1202323111313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1202323111303) 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, 3600470 + ... + 3920207.

It is an arithmetic number, because the mean of its divisors is an integer number (300582697965).

Almost surely, 2^{1202323111313} is an apocalyptic number.

It is an amenable number.

1202323111313 is a deficient number, since it is larger than the sum of its proper divisors (7680547).

1202323111313 is an equidigital number, since it uses as much as digits as its factorization.

1202323111313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7680546.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1202323111313 its reverse (3131113232021), we get a palindrome (4333436343334).

The spelling of 1202323111313 in words is "one trillion, two hundred two billion, three hundred twenty-three million, one hundred eleven thousand, three hundred thirteen".