1329669231 has 16 divisors (see below), whose sum is σ = 1960561920. Its totient is φ = 794819520.

The previous prime is 1329669199. The next prime is 1329669233.

It is a happy number.

1329669231 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1329669231 - 2⁵ = 1329669199 is a prime.

It is a super-2 number, since 2×1329669231² = 3536040527736262722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1329669233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273571 + ... + 278388.

It is an arithmetic number, because the mean of its divisors is an integer number (122535120).

Almost surely, 2^1329669231 is an apocalyptic number.

1329669231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1329669231 is a deficient number, since it is larger than the sum of its proper divisors (630892689).

1329669231 is a wasteful number, since it uses less digits than its factorization.

1329669231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552046.

The product of its digits is 104976, while the sum is 42.

The square root of 1329669231 is about 36464.6298623749. The cubic root of 1329669231 is about 1099.6332747220.

The spelling of 1329669231 in words is "one billion, three hundred twenty-nine million, six hundred sixty-nine thousand, two hundred thirty-one".