1321630034 has 4 divisors (see below), whose sum is σ = 1982445054. Its totient is φ = 660815016.

The previous prime is 1321630019. The next prime is 1321630061. The reversal of 1321630034 is 4300361231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4300361231 = 5749 ⋅748019.

It can be written as a sum of positive squares in only one way, i.e., 1321104409 + 525625 = 36347^2 + 725^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321629991 and 1321630009.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330407507 + ... + 330407510.

Almost surely, 2^1321630034 is an apocalyptic number.

1321630034 is a deficient number, since it is larger than the sum of its proper divisors (660815020).

1321630034 is an equidigital number, since it uses as much as digits as its factorization.

1321630034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660815019.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 1321630034 is about 36354.2299327052. The cubic root of 1321630034 is about 1097.4126611728.

Adding to 1321630034 its reverse (4300361231), we get a palindrome (5621991265).

The spelling of 1321630034 in words is "one billion, three hundred twenty-one million, six hundred thirty thousand, thirty-four".