1311532455 has 16 divisors (see below), whose sum is σ = 2101294080. Its totient is φ = 698536608.

The previous prime is 1311532447. The next prime is 1311532499. The reversal of 1311532455 is 5542351131.

It is not a de Polignac number, because 1311532455 - 2³ = 1311532447 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47695 + ... + 69984.

It is an arithmetic number, because the mean of its divisors is an integer number (131330880).

Almost surely, 2^1311532455 is an apocalyptic number.

1311532455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1311532455 is a deficient number, since it is larger than the sum of its proper divisors (789761625).

1311532455 is a wasteful number, since it uses less digits than its factorization.

1311532455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118430.

The product of its digits is 9000, while the sum is 30.

The square root of 1311532455 is about 36215.0860139804. The cubic root of 1311532455 is about 1094.6106787176.

Adding to 1311532455 its reverse (5542351131), we get a palindrome (6853883586).

The spelling of 1311532455 in words is "one billion, three hundred eleven million, five hundred thirty-two thousand, four hundred fifty-five".