1311012903 has 8 divisors (see below), whose sum is σ = 1824018048. Its totient is φ = 836008184.

The previous prime is 1311012887. The next prime is 1311012917. The reversal of 1311012903 is 3092101131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1311012903 - 2⁴ = 1311012887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1311012903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311012973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9500025 + ... + 9500162.

It is an arithmetic number, because the mean of its divisors is an integer number (228002256).

Almost surely, 2^1311012903 is an apocalyptic number.

1311012903 is a deficient number, since it is larger than the sum of its proper divisors (513005145).

1311012903 is a wasteful number, since it uses less digits than its factorization.

1311012903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19000213.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1311012903 is about 36207.9121601895. The cubic root of 1311012903 is about 1094.4661195093.

The spelling of 1311012903 in words is "one billion, three hundred eleven million, twelve thousand, nine hundred three".