1331432002 has 4 divisors (see below), whose sum is σ = 1997148006. Its totient is φ = 665716000.

The previous prime is 1331431999. The next prime is 1331432009. The reversal of 1331432002 is 2002341331.

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

It can be written as a sum of positive squares in only one way, i.e., 1311815961 + 19616041 = 36219^2 + 4429^2 .

It is a super-2 number, since 2×1331432002² = 3545422351899456008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331432009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332857999 + ... + 332858002.

Almost surely, 2^1331432002 is an apocalyptic number.

1331432002 is a deficient number, since it is larger than the sum of its proper divisors (665716004).

1331432002 is an equidigital number, since it uses as much as digits as its factorization.

1331432002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665716003.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1331432002 is about 36488.7928273874. The cubic root of 1331432002 is about 1100.1189959422.

Adding to 1331432002 its reverse (2002341331), we get a palindrome (3333773333).

The spelling of 1331432002 in words is "one billion, three hundred thirty-one million, four hundred thirty-two thousand, two".