1211013132313 has 4 divisors (see below), whose sum is σ = 1211015744820. Its totient is φ = 1211010519808.

The previous prime is 1211013132293. The next prime is 1211013132331. The reversal of 1211013132313 is 3132313101121.

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 24029030169 + 1186984102144 = 155013^2 + 1089488^2 .

It is a cyclic number.

It is not a de Polignac number, because 1211013132313 - 2³⁷ = 1073574178841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211013132613) 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, 402520 + ... + 1607497.

It is an arithmetic number, because the mean of its divisors is an integer number (302753936205).

Almost surely, 2^{1211013132313} is an apocalyptic number.

It is an amenable number.

1211013132313 is a deficient number, since it is larger than the sum of its proper divisors (2612507).

1211013132313 is an equidigital number, since it uses as much as digits as its factorization.

1211013132313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2612506.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1211013132313 its reverse (3132313101121), we get a palindrome (4343326233434).

The spelling of 1211013132313 in words is "one trillion, two hundred eleven billion, thirteen million, one hundred thirty-two thousand, three hundred thirteen".