1152020313 has 30 divisors (see below), whose sum is σ = 1734951966. Its totient is φ = 761799168.

The previous prime is 1152020299. The next prime is 1152020339. The reversal of 1152020313 is 3130202511.

It can be written as a sum of positive squares in 3 ways, for example, as 294877584 + 857142729 = 17172^2 + 29277^2 .

It is not a de Polignac number, because 1152020313 - 2⁸ = 1152020057 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1152020383) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 1996281 + ... + 1996857.

Almost surely, 2^1152020313 is an apocalyptic number.

It is an amenable number.

1152020313 is a deficient number, since it is larger than the sum of its proper divisors (582931653).

1152020313 is an frugal number, since it uses more digits than its factorization.

1152020313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 903 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 1152020313 is about 33941.4247343862. The cubic root of 1152020313 is about 1048.3027191196.

Adding to 1152020313 its reverse (3130202511), we get a palindrome (4282222824).

The spelling of 1152020313 in words is "one billion, one hundred fifty-two million, twenty thousand, three hundred thirteen".