1531322479 has 2 divisors, whose sum is σ = 1531322480. Its totient is φ = 1531322478.

The previous prime is 1531322477. The next prime is 1531322501. The reversal of 1531322479 is 9742231351.

It is a weak prime.

It is an emirp because it is prime and its reverse (9742231351) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1531322479 - 2¹ = 1531322477 is a prime.

Together with 1531322477, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1531322477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 765661239 + 765661240.

It is an arithmetic number, because the mean of its divisors is an integer number (765661240).

Almost surely, 2^1531322479 is an apocalyptic number.

1531322479 is a deficient number, since it is larger than the sum of its proper divisors (1).

1531322479 is an equidigital number, since it uses as much as digits as its factorization.

1531322479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 37.

The square root of 1531322479 is about 39132.1156979788. The cubic root of 1531322479 is about 1152.6272582957.

The spelling of 1531322479 in words is "one billion, five hundred thirty-one million, three hundred twenty-two thousand, four hundred seventy-nine".