1231204322 has 4 divisors (see below), whose sum is σ = 1846806486. Its totient is φ = 615602160.

The previous prime is 1231204319. The next prime is 1231204357. The reversal of 1231204322 is 2234021321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1041288361 + 189915961 = 32269^2 + 13781^2 .

It is a super-2 number, since 2×1231204322² = 3031728165022959368, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1231204294 and 1231204303.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 307801079 + ... + 307801082.

Almost surely, 2^1231204322 is an apocalyptic number.

1231204322 is a deficient number, since it is larger than the sum of its proper divisors (615602164).

1231204322 is an equidigital number, since it uses as much as digits as its factorization.

1231204322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615602163.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 1231204322 is about 35088.5212284587. The cubic root of 1231204322 is about 1071.7908467588.

Adding to 1231204322 its reverse (2234021321), we get a palindrome (3465225643).

The spelling of 1231204322 in words is "one billion, two hundred thirty-one million, two hundred four thousand, three hundred twenty-two".