1231234304 has 18 divisors (see below), whose sum is σ = 2457659610. Its totient is φ = 615617024.

The previous prime is 1231234283. The next prime is 1231234307. The reversal of 1231234304 is 4034321321.

It can be written as a sum of positive squares in only one way, i.e., 927080704 + 304153600 = 30448^2 + 17440^2 .

It is a super-2 number, since 2×1231234304² = 3031875822692728832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1231234304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1231234307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2404499 + ... + 2405010.

It is an arithmetic number, because the mean of its divisors is an integer number (136536645).

Almost surely, 2^1231234304 is an apocalyptic number.

It is an amenable number.

1231234304 is a deficient number, since it is larger than the sum of its proper divisors (1226425306).

1231234304 is an frugal number, since it uses more digits than its factorization.

1231234304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809525 (or 4809511 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 1231234304 is about 35088.9484595934. The cubic root of 1231234304 is about 1071.7995466883.

Adding to 1231234304 its reverse (4034321321), we get a palindrome (5265555625).

The spelling of 1231234304 in words is "one billion, two hundred thirty-one million, two hundred thirty-four thousand, three hundred four".