1312211342 has 16 divisors (see below), whose sum is σ = 2121949872. Its totient is φ = 605000640.

The previous prime is 1312211339. The next prime is 1312211347. The reversal of 1312211342 is 2431122131.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312211347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 743 + ... + 51234.

It is an arithmetic number, because the mean of its divisors is an integer number (132621867).

Almost surely, 2^1312211342 is an apocalyptic number.

1312211342 is a deficient number, since it is larger than the sum of its proper divisors (809738530).

1312211342 is a wasteful number, since it uses less digits than its factorization.

1312211342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52963.

The product of its digits is 288, while the sum is 20.

The square root of 1312211342 is about 36224.4577875225. The cubic root of 1312211342 is about 1094.7995134847.

Adding to 1312211342 its reverse (2431122131), we get a palindrome (3743333473).

The spelling of 1312211342 in words is "one billion, three hundred twelve million, two hundred eleven thousand, three hundred forty-two".