1311132142 has 8 divisors (see below), whose sum is σ = 1966945176. Its totient is φ = 655483752.

The previous prime is 1311132139. The next prime is 1311132143. The reversal of 1311132142 is 2412311131.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311132143) 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, 18828 + ... + 54559.

It is an arithmetic number, because the mean of its divisors is an integer number (245868147).

Almost surely, 2^1311132142 is an apocalyptic number.

1311132142 is a deficient number, since it is larger than the sum of its proper divisors (655813034).

1311132142 is an equidigital number, since it uses as much as digits as its factorization.

1311132142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82322.

The product of its digits is 144, while the sum is 19.

The square root of 1311132142 is about 36209.5587103737. The cubic root of 1311132142 is about 1094.4992997292.

Adding to 1311132142 its reverse (2412311131), we get a palindrome (3723443273).

The spelling of 1311132142 in words is "one billion, three hundred eleven million, one hundred thirty-two thousand, one hundred forty-two".