15131213045306 has 4 divisors (see below), whose sum is σ = 22696819567962. Its totient is φ = 7565606522652.

The previous prime is 15131213045303. The next prime is 15131213045309. The reversal of 15131213045306 is 60354031213151.

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

It is an interprime number because it is at equal distance from previous prime (15131213045303) and next prime (15131213045309).

It can be written as a sum of positive squares in only one way, i.e., 10660166230081 + 4471046815225 = 3264991^2 + 2114485^2 .

It is not an unprimeable number, because it can be changed into a prime (15131213045303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3782803261325 + ... + 3782803261328.

Almost surely, 2^{15131213045306} is an apocalyptic number.

15131213045306 is a deficient number, since it is larger than the sum of its proper divisors (7565606522656).

15131213045306 is an equidigital number, since it uses as much as digits as its factorization.

15131213045306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7565606522655.

The product of its (nonzero) digits is 32400, while the sum is 35.

Adding to 15131213045306 its reverse (60354031213151), we get a palindrome (75485244258457).

The spelling of 15131213045306 in words is "fifteen trillion, one hundred thirty-one billion, two hundred thirteen million, forty-five thousand, three hundred six".