1311210442 has 16 divisors (see below), whose sum is σ = 2094154560. Its totient is φ = 613590208.

The previous prime is 1311210431. The next prime is 1311210457. The reversal of 1311210442 is 2440121131.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101638 + ... + 113809.

It is an arithmetic number, because the mean of its divisors is an integer number (130884660).

Almost surely, 2^1311210442 is an apocalyptic number.

1311210442 is a deficient number, since it is larger than the sum of its proper divisors (782944118).

1311210442 is a wasteful number, since it uses less digits than its factorization.

1311210442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215645.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1311210442 is about 36210.6399004491. The cubic root of 1311210442 is about 1094.5210869024.

Adding to 1311210442 its reverse (2440121131), we get a palindrome (3751331573).

The spelling of 1311210442 in words is "one billion, three hundred eleven million, two hundred ten thousand, four hundred forty-two".