1521105313 has 8 divisors (see below), whose sum is σ = 1872129728. Its totient is φ = 1203511824.

The previous prime is 1521105301. The next prime is 1521105329. The reversal of 1521105313 is 3135011251.

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 1521105313 - 2⁵ = 1521105281 is a prime.

It is a super-2 number, since 2×1521105313² = 4627522746473655938, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1521135313) 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, 8357631 + ... + 8357812.

It is an arithmetic number, because the mean of its divisors is an integer number (234016216).

Almost surely, 2^1521105313 is an apocalyptic number.

1521105313 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1521105313 is a deficient number, since it is larger than the sum of its proper divisors (351024415).

1521105313 is a wasteful number, since it uses less digits than its factorization.

1521105313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16715463.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 1521105313 is about 39001.3501432963. The cubic root of 1521105313 is about 1150.0580469755.

Adding to 1521105313 its reverse (3135011251), we get a palindrome (4656116564).

The spelling of 1521105313 in words is "one billion, five hundred twenty-one million, one hundred five thousand, three hundred thirteen".