15131330 has 16 divisors (see below), whose sum is σ = 28176120. Its totient is φ = 5843712.

The previous prime is 15131327. The next prime is 15131351. The reversal of 15131330 is 3313151.

15131330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 6911641 + 8219689 = 2629^2 + 2867^2 .

It is a junction number, because it is equal to n+sod(n) for n = 15131299 and 15131308.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25799 + ... + 26378.

Almost surely, 2^15131330 is an apocalyptic number.

15131330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15131330 is a deficient number, since it is larger than the sum of its proper divisors (13044790).

15131330 is a wasteful number, since it uses less digits than its factorization.

15131330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52213.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 15131330 is about 3889.9010270186. The cubic root of 15131330 is about 247.3388673325.

Adding to 15131330 its reverse (3313151), we get a palindrome (18444481).

The spelling of 15131330 in words is "fifteen million, one hundred thirty-one thousand, three hundred thirty".