1520307313 has 8 divisors (see below), whose sum is σ = 1738674432. Its totient is φ = 1302235296.

The previous prime is 1520307307. The next prime is 1520307317. The reversal of 1520307313 is 3137030251.

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 1520307313 - 2²⁵ = 1486752881 is a prime.

It is a super-3 number, since 3×1520307313³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1520307317) 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, 62620 + ... + 83437.

It is an arithmetic number, because the mean of its divisors is an integer number (217334304).

Almost surely, 2^1520307313 is an apocalyptic number.

It is an amenable number.

1520307313 is a deficient number, since it is larger than the sum of its proper divisors (218367119).

1520307313 is a wasteful number, since it uses less digits than its factorization.

1520307313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147551.

The product of its (nonzero) digits is 1890, while the sum is 25.

The square root of 1520307313 is about 38991.1183861145. The cubic root of 1520307313 is about 1149.8568978836.

Adding to 1520307313 its reverse (3137030251), we get a palindrome (4657337564).

The spelling of 1520307313 in words is "one billion, five hundred twenty million, three hundred seven thousand, three hundred thirteen".