1328007131 has 4 divisors (see below), whose sum is σ = 1448735064. Its totient is φ = 1207279200.

The previous prime is 1328007073. The next prime is 1328007199. The reversal of 1328007131 is 1317008231.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1328007131 is a prime.

It is a super-2 number, since 2×1328007131² = 3527205879973702322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1328007131.

It is not an unprimeable number, because it can be changed into a prime (1328009131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60363950 + ... + 60363971.

It is an arithmetic number, because the mean of its divisors is an integer number (362183766).

Almost surely, 2^1328007131 is an apocalyptic number.

1328007131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1328007131 is a deficient number, since it is larger than the sum of its proper divisors (120727933).

1328007131 is a wasteful number, since it uses less digits than its factorization.

1328007131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120727932.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 1328007131 is about 36441.8321575631. The cubic root of 1328007131 is about 1099.1748994357.

It can be divided in two parts, 132800 and 7131, that added together give a palindrome (139931).

The spelling of 1328007131 in words is "one billion, three hundred twenty-eight million, seven thousand, one hundred thirty-one".