215001013 has 2 divisors, whose sum is σ = 215001014. Its totient is φ = 215001012.

The previous prime is 215000927. The next prime is 215001037. The reversal of 215001013 is 310100512.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 145395364 + 69605649 = 12058^2 + 8343^2 .

It is a cyclic number.

It is not a de Polignac number, because 215001013 - 2⁹ = 215000501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215000984 and 215001002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215001053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107500506 + 107500507.

It is an arithmetic number, because the mean of its divisors is an integer number (107500507).

Almost surely, 2^215001013 is an apocalyptic number.

It is an amenable number.

215001013 is a deficient number, since it is larger than the sum of its proper divisors (1).

215001013 is an equidigital number, since it uses as much as digits as its factorization.

215001013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30, while the sum is 13.

The square root of 215001013 is about 14662.9128415878. The cubic root of 215001013 is about 599.0735823572.

Adding to 215001013 its reverse (310100512), we get a palindrome (525101525).

The spelling of 215001013 in words is "two hundred fifteen million, one thousand, thirteen".