1321870134 has 16 divisors (see below), whose sum is σ = 2847105072. Its totient is φ = 406729248.

The previous prime is 1321870133. The next prime is 1321870171. The reversal of 1321870134 is 4310781231.

It is a super-2 number, since 2×1321870134² = 3494681302322355912, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321870133) 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, 8473449 + ... + 8473604.

It is an arithmetic number, because the mean of its divisors is an integer number (177944067).

Almost surely, 2^1321870134 is an apocalyptic number.

1321870134 is an abundant number, since it is smaller than the sum of its proper divisors (1525234938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321870134 is a wasteful number, since it uses less digits than its factorization.

1321870134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16947071.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 1321870134 is about 36357.5320119504. The cubic root of 1321870134 is about 1097.4791126554.

The spelling of 1321870134 in words is "one billion, three hundred twenty-one million, eight hundred seventy thousand, one hundred thirty-four".