1328613231 has 16 divisors (see below), whose sum is σ = 1956994560. Its totient is φ = 795025920.

The previous prime is 1328613229. The next prime is 1328613277. The reversal of 1328613231 is 1323168231.

It is not a de Polignac number, because 1328613231 - 2¹ = 1328613229 is a prime.

It is a super-2 number, since 2×1328613231² = 3530426235176518722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328613211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252210 + ... + 257423.

It is an arithmetic number, because the mean of its divisors is an integer number (122312160).

Almost surely, 2^1328613231 is an apocalyptic number.

1328613231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1328613231 is a deficient number, since it is larger than the sum of its proper divisors (628381329).

1328613231 is a wasteful number, since it uses less digits than its factorization.

1328613231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 509726.

The product of its digits is 5184, while the sum is 30.

The square root of 1328613231 is about 36450.1472013489. The cubic root of 1328613231 is about 1099.3420944666.

It can be divided in two parts, 1328613 and 231, that multiplied together give a palindrome (306909603).

The spelling of 1328613231 in words is "one billion, three hundred twenty-eight million, six hundred thirteen thousand, two hundred thirty-one".