15480331 has 2 divisors, whose sum is σ = 15480332. Its totient is φ = 15480330.

The previous prime is 15480313. The next prime is 15480341. The reversal of 15480331 is 13308451.

15480331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (15480313) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15480331 - 2⁵ = 15480299 is a prime.

It is a super-2 number, since 2×15480331² = 479281295739122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 15480296 and 15480305.

It is not a weakly prime, because it can be changed into another prime (15480341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7740165 + 7740166.

It is an arithmetic number, because the mean of its divisors is an integer number (7740166).

Almost surely, 2^15480331 is an apocalyptic number.

15480331 is a deficient number, since it is larger than the sum of its proper divisors (1).

15480331 is an equidigital number, since it uses as much as digits as its factorization.

15480331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 15480331 is about 3934.5051785453. The cubic root of 15480331 is about 249.2260384064.

Adding to 15480331 its reverse (13308451), we get a palindrome (28788782).

The spelling of 15480331 in words is "fifteen million, four hundred eighty thousand, three hundred thirty-one".