1013515151321 has 8 divisors (see below), whose sum is σ = 1085191373160. Its totient is φ = 943178672128.

The previous prime is 1013515151291. The next prime is 1013515151417. The reversal of 1013515151321 is 1231515153101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 437464510921 + 576050640400 = 661411^2 + 758980^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1013515151321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1013515151921) 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, 334934096 + ... + 334937121.

It is an arithmetic number, because the mean of its divisors is an integer number (135648921645).

Almost surely, 2^{1013515151321} is an apocalyptic number.

It is an amenable number.

1013515151321 is a deficient number, since it is larger than the sum of its proper divisors (71676221839).

1013515151321 is an equidigital number, since it uses as much as digits as its factorization.

1013515151321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669871323.

The product of its (nonzero) digits is 2250, while the sum is 29.

The spelling of 1013515151321 in words is "one trillion, thirteen billion, five hundred fifteen million, one hundred fifty-one thousand, three hundred twenty-one".