1312221134 has 32 divisors (see below), whose sum is σ = 2343475200. Its totient is φ = 539226720.

The previous prime is 1312221083. The next prime is 1312221151. The reversal of 1312221134 is 4311222131.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33437 + ... + 61175.

It is an arithmetic number, because the mean of its divisors is an integer number (73233600).

Almost surely, 2^1312221134 is an apocalyptic number.

1312221134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1312221134 is a deficient number, since it is larger than the sum of its proper divisors (1031254066).

1312221134 is a wasteful number, since it uses less digits than its factorization.

1312221134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27888.

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

The square root of 1312221134 is about 36224.5929445729. The cubic root of 1312221134 is about 1094.8022366868.

Adding to 1312221134 its reverse (4311222131), we get a palindrome (5623443265).

The spelling of 1312221134 in words is "one billion, three hundred twelve million, two hundred twenty-one thousand, one hundred thirty-four".