1323439137 has 12 divisors (see below), whose sum is σ = 2024083620. Its totient is φ = 830393088.

The previous prime is 1323439127. The next prime is 1323439213. The reversal of 1323439137 is 7319343231.

It is a happy number.

1323439137 is a `hidden beast` number, since 1 + 3 + 234 + 391 + 37 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 920272896 + 403166241 = 30336^2 + 20079^2 .

It is not a de Polignac number, because 1323439137 - 2⁴ = 1323439121 is a prime.

It is a super-2 number, since 2×1323439137² = 3502982298686609538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1323439127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4324812 + ... + 4325117.

It is an arithmetic number, because the mean of its divisors is an integer number (168673635).

Almost surely, 2^1323439137 is an apocalyptic number.

1323439137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1323439137 is a deficient number, since it is larger than the sum of its proper divisors (700644483).

1323439137 is a wasteful number, since it uses less digits than its factorization.

1323439137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8649952 (or 8649949 counting only the distinct ones).

The product of its digits is 40824, while the sum is 36.

The square root of 1323439137 is about 36379.1030263254. The cubic root of 1323439137 is about 1097.9131611377.

The spelling of 1323439137 in words is "one billion, three hundred twenty-three million, four hundred thirty-nine thousand, one hundred thirty-seven".