1523528431 has 2 divisors, whose sum is σ = 1523528432. Its totient is φ = 1523528430.

The previous prime is 1523528429. The next prime is 1523528443. The reversal of 1523528431 is 1348253251.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1523528431 - 2¹ = 1523528429 is a prime.

It is a super-2 number, since 2×1523528431² = 4642277760130643522, which contains 22 as substring.

Together with 1523528429, 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 (1523528401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761764215 + 761764216.

It is an arithmetic number, because the mean of its divisors is an integer number (761764216).

Almost surely, 2^1523528431 is an apocalyptic number.

1523528431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523528431 is an equidigital number, since it uses as much as digits as its factorization.

1523528431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28800, while the sum is 34.

The square root of 1523528431 is about 39032.4023216609. The cubic root of 1523528431 is about 1150.6684031178.

The spelling of 1523528431 in words is "one billion, five hundred twenty-three million, five hundred twenty-eight thousand, four hundred thirty-one".