1311022313 has 16 divisors (see below), whose sum is σ = 1368576000. Its totient is φ = 1254921360.

The previous prime is 1311022283. The next prime is 1311022327. The reversal of 1311022313 is 3132201131.

It is a cyclic number.

It is not a de Polignac number, because 1311022313 - 2¹⁸ = 1310760169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1311022291 and 1311022300.

It is not an unprimeable number, because it can be changed into a prime (1311022373) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 545288 + ... + 547686.

It is an arithmetic number, because the mean of its divisors is an integer number (85536000).

Almost surely, 2^1311022313 is an apocalyptic number.

It is an amenable number.

1311022313 is a deficient number, since it is larger than the sum of its proper divisors (57553687).

1311022313 is a wasteful number, since it uses less digits than its factorization.

1311022313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2692.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1311022313 is about 36208.0421039304. The cubic root of 1311022313 is about 1094.4687380703.

Adding to 1311022313 its reverse (3132201131), we get a palindrome (4443223444).

The spelling of 1311022313 in words is "one billion, three hundred eleven million, twenty-two thousand, three hundred thirteen".