1013125321 has 8 divisors (see below), whose sum is σ = 1138495680. Its totient is φ = 894531792.

The previous prime is 1013125313. The next prime is 1013125331. The reversal of 1013125321 is 1235213101.

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 1013125321 - 2³ = 1013125313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1013125331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1693891 + ... + 1694488.

It is an arithmetic number, because the mean of its divisors is an integer number (142311960).

Almost surely, 2^1013125321 is an apocalyptic number.

It is an amenable number.

1013125321 is a deficient number, since it is larger than the sum of its proper divisors (125370359).

1013125321 is a wasteful number, since it uses less digits than its factorization.

1013125321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3388415.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 1013125321 is about 31829.6296082754. The cubic root of 1013125321 is about 1004.3561038063.

Adding to 1013125321 its reverse (1235213101), we get a palindrome (2248338422).

The spelling of 1013125321 in words is "one billion, thirteen million, one hundred twenty-five thousand, three hundred twenty-one".