1203012313 has 4 divisors (see below), whose sum is σ = 1214923428. Its totient is φ = 1191101200.

The previous prime is 1203012311. The next prime is 1203012323. The reversal of 1203012313 is 3132103021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 605307609 + 597704704 = 24603^2 + 24448^2 .

It is a cyclic number.

It is not a de Polignac number, because 1203012313 - 2¹ = 1203012311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1203012311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5955406 + ... + 5955607.

It is an arithmetic number, because the mean of its divisors is an integer number (303730857).

Almost surely, 2^1203012313 is an apocalyptic number.

It is an amenable number.

1203012313 is a deficient number, since it is larger than the sum of its proper divisors (11911115).

1203012313 is a wasteful number, since it uses less digits than its factorization.

1203012313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11911114.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 1203012313 is about 34684.4678927038. The cubic root of 1203012313 is about 1063.5470095862.

Adding to 1203012313 its reverse (3132103021), we get a palindrome (4335115334).

The spelling of 1203012313 in words is "one billion, two hundred three million, twelve thousand, three hundred thirteen".