15480431 has 2 divisors, whose sum is σ = 15480432. Its totient is φ = 15480430.

The previous prime is 15480407. The next prime is 15480433. The reversal of 15480431 is 13408451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15480431 - 2²² = 11286127 is a prime.

It is a super-2 number, since 2×15480431² = 479287487891522, which contains 22 as substring.

Together with 15480433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15480431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15480433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7740215 + 7740216.

It is an arithmetic number, because the mean of its divisors is an integer number (7740216).

Almost surely, 2^15480431 is an apocalyptic number.

15480431 is a deficient number, since it is larger than the sum of its proper divisors (1).

15480431 is an equidigital number, since it uses as much as digits as its factorization.

15480431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 15480431 is about 3934.5178866031. The cubic root of 15480431 is about 249.2265750562.

Adding to 15480431 its reverse (13408451), we get a palindrome (28888882).

The spelling of 15480431 in words is "fifteen million, four hundred eighty thousand, four hundred thirty-one".