1603115213 has 12 divisors (see below), whose sum is σ = 1867985532. Its totient is φ = 1371787200.

The previous prime is 1603115191. The next prime is 1603115263. The reversal of 1603115213 is 3125113061.

It can be written as a sum of positive squares in 2 ways, for example, as 750650404 + 852464809 = 27398^2 + 29197^2 .

It is not a de Polignac number, because 1603115213 - 2¹⁶ = 1603049677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603115263) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2231 + ... + 56667.

It is an arithmetic number, because the mean of its divisors is an integer number (155665461).

Almost surely, 2^1603115213 is an apocalyptic number.

It is an amenable number.

1603115213 is a deficient number, since it is larger than the sum of its proper divisors (264870319).

1603115213 is an equidigital number, since it uses as much as digits as its factorization.

1603115213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55052 (or 55045 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1603115213 is about 40038.9212267264. The cubic root of 1603115213 is about 1170.3656813461.

Adding to 1603115213 its reverse (3125113061), we get a palindrome (4728228274).

The spelling of 1603115213 in words is "one billion, six hundred three million, one hundred fifteen thousand, two hundred thirteen".