1520303423 has 8 divisors (see below), whose sum is σ = 1525058640. Its totient is φ = 1515556800.

The previous prime is 1520303419. The next prime is 1520303437. The reversal of 1520303423 is 3243030251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1520303423 - 2² = 1520303419 is a prime.

It is a super-2 number, since 2×1520303423² = 4622644995971033858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1520303443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543713 + ... + 546501.

It is an arithmetic number, because the mean of its divisors is an integer number (190632330).

Almost surely, 2^1520303423 is an apocalyptic number.

1520303423 is a deficient number, since it is larger than the sum of its proper divisors (4755217).

1520303423 is an equidigital number, since it uses as much as digits as its factorization.

1520303423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 1520303423 is about 38991.0685029277. The cubic root of 1520303423 is about 1149.8559171724.

Adding to 1520303423 its reverse (3243030251), we get a palindrome (4763333674).

The spelling of 1520303423 in words is "one billion, five hundred twenty million, three hundred three thousand, four hundred twenty-three".