1571320423 has 4 divisors (see below), whose sum is σ = 1571773000. Its totient is φ = 1570867848.

The previous prime is 1571320397. The next prime is 1571320433. The reversal of 1571320423 is 3240231751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1571320423 - 2¹³ = 1571312231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1571320391 and 1571320400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1571320433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221040 + ... + 228037.

It is an arithmetic number, because the mean of its divisors is an integer number (392943250).

Almost surely, 2^1571320423 is an apocalyptic number.

1571320423 is a deficient number, since it is larger than the sum of its proper divisors (452577).

1571320423 is an equidigital number, since it uses as much as digits as its factorization.

1571320423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452576.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 1571320423 is about 39639.8842455424. The cubic root of 1571320423 is about 1162.5766206561.

The spelling of 1571320423 in words is "one billion, five hundred seventy-one million, three hundred twenty thousand, four hundred twenty-three".