1311012022 has 4 divisors (see below), whose sum is σ = 1966518036. Its totient is φ = 655506010.

The previous prime is 1311012007. The next prime is 1311012071. The reversal of 1311012022 is 2202101131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1311011993 and 1311012011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327753004 + ... + 327753007.

It is an arithmetic number, because the mean of its divisors is an integer number (491629509).

Almost surely, 2^1311012022 is an apocalyptic number.

1311012022 is a deficient number, since it is larger than the sum of its proper divisors (655506014).

1311012022 is an equidigital number, since it uses as much as digits as its factorization.

1311012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655506013.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1311012022 is about 36207.8999943383. The cubic root of 1311012022 is about 1094.4658743490.

Adding to 1311012022 its reverse (2202101131), we get a palindrome (3513113153).

The spelling of 1311012022 in words is "one billion, three hundred eleven million, twelve thousand, twenty-two".