1232772321 has 48 divisors (see below), whose sum is σ = 1845197312. Its totient is φ = 731427840.

The previous prime is 1232772311. The next prime is 1232772341.

1232772321 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1232772321 - 2¹⁵ = 1232739553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1232772301) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5528016 + ... + 5528238.

Almost surely, 2^1232772321 is an apocalyptic number.

1232772321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232772321 is a deficient number, since it is larger than the sum of its proper divisors (612424991).

1232772321 is a wasteful number, since it uses less digits than its factorization.

1232772321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502 (or 491 counting only the distinct ones).

The product of its digits is 7056, while the sum is 30.

The square root of 1232772321 is about 35110.8575941973. The cubic root of 1232772321 is about 1072.2456464543.

It can be divided in two parts, 12327 and 72321, that added together give a palindrome (84648).

The spelling of 1232772321 in words is "one billion, two hundred thirty-two million, seven hundred seventy-two thousand, three hundred twenty-one".