1311152103 has 20 divisors (see below), whose sum is σ = 1991839080. Its totient is φ = 859282992.

The previous prime is 1311152093. The next prime is 1311152131. The reversal of 1311152103 is 3012511131.

1311152103 is a `hidden beast` number, since 131 + 11 + 521 + 0 + 3 = 666.

It is not a de Polignac number, because 1311152103 - 2⁹ = 1311151591 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311152153) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 132400 + ... + 141957.

It is an arithmetic number, because the mean of its divisors is an integer number (99591954).

Almost surely, 2^1311152103 is an apocalyptic number.

1311152103 is a deficient number, since it is larger than the sum of its proper divisors (680686977).

1311152103 is an equidigital number, since it uses as much as digits as its factorization.

1311152103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274428 (or 274419 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 18.

The square root of 1311152103 is about 36209.8343409632. The cubic root of 1311152103 is about 1094.5048540104.

Adding to 1311152103 its reverse (3012511131), we get a palindrome (4323663234).

The spelling of 1311152103 in words is "one billion, three hundred eleven million, one hundred fifty-two thousand, one hundred three".