1321100134 has 16 divisors (see below), whose sum is σ = 2087740080. Its totient is φ = 625246560.

The previous prime is 1321100129. The next prime is 1321100149. The reversal of 1321100134 is 4310011231.

It is a congruent number.

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, 31764 + ... + 60424.

It is an arithmetic number, because the mean of its divisors is an integer number (130483755).

Almost surely, 2^1321100134 is an apocalyptic number.

1321100134 is a deficient number, since it is larger than the sum of its proper divisors (766639946).

1321100134 is a wasteful number, since it uses less digits than its factorization.

1321100134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29895.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1321100134 is about 36346.9411917977. The cubic root of 1321100134 is about 1097.2659744575.

Adding to 1321100134 its reverse (4310011231), we get a palindrome (5631111365).

The spelling of 1321100134 in words is "one billion, three hundred twenty-one million, one hundred thousand, one hundred thirty-four".