1313212303 has 24 divisors (see below), whose sum is σ = 1531812480. Its totient is φ = 1121571360.

The previous prime is 1313212291. The next prime is 1313212367. The reversal of 1313212303 is 3032123131.

It is not a de Polignac number, because 1313212303 - 2⁹ = 1313211791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1313212003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133318 + ... + 142828.

It is an arithmetic number, because the mean of its divisors is an integer number (63825520).

Almost surely, 2^1313212303 is an apocalyptic number.

1313212303 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1313212303 is a deficient number, since it is larger than the sum of its proper divisors (218600177).

1313212303 is a wasteful number, since it uses less digits than its factorization.

1313212303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599 (or 9586 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 1313212303 is about 36238.2712473981. The cubic root of 1313212303 is about 1095.0778154773.

Adding to 1313212303 its reverse (3032123131), we get a palindrome (4345335434).

The spelling of 1313212303 in words is "one billion, three hundred thirteen million, two hundred twelve thousand, three hundred three".