1311129463 has 4 divisors (see below), whose sum is σ = 1498433680. Its totient is φ = 1123825248.

The previous prime is 1311129439. The next prime is 1311129473. The reversal of 1311129463 is 3649211131.

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

It is not a de Polignac number, because 1311129463 - 2²¹ = 1309032311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311129433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93652098 + ... + 93652111.

It is an arithmetic number, because the mean of its divisors is an integer number (374608420).

Almost surely, 2^1311129463 is an apocalyptic number.

1311129463 is a deficient number, since it is larger than the sum of its proper divisors (187304217).

1311129463 is an equidigital number, since it uses as much as digits as its factorization.

1311129463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187304216.

The product of its digits is 3888, while the sum is 31.

The square root of 1311129463 is about 36209.5217173605. The cubic root of 1311129463 is about 1094.4985542754.

The spelling of 1311129463 in words is "one billion, three hundred eleven million, one hundred twenty-nine thousand, four hundred sixty-three".