13031002 has 4 divisors (see below), whose sum is σ = 19546506. Its totient is φ = 6515500.

The previous prime is 13030999. The next prime is 13031009. The reversal of 13031002 is 20013031.

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., 8404201 + 4626801 = 2899^2 + 2151^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13031002.

It is not an unprimeable number, because it can be changed into a prime (13031009) 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, 3257749 + ... + 3257752.

Almost surely, 2^13031002 is an apocalyptic number.

13031002 is a deficient number, since it is larger than the sum of its proper divisors (6515504).

13031002 is an equidigital number, since it uses as much as digits as its factorization.

13031002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515503.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 13031002 is about 3609.8479192343. The cubic root of 13031002 is about 235.3202334076.

Adding to 13031002 its reverse (20013031), we get a palindrome (33044033).

The spelling of 13031002 in words is "thirteen million, thirty-one thousand, two".