1311506330 has 32 divisors (see below), whose sum is σ = 2414914560. Its totient is φ = 512594560.

The previous prime is 1311506297. The next prime is 1311506333. The reversal of 1311506330 is 336051131.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1311506296 and 1311506305.

It is not an unprimeable number, because it can be changed into a prime (1311506333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 335990 + ... + 339870.

It is an arithmetic number, because the mean of its divisors is an integer number (75466080).

Almost surely, 2^1311506330 is an apocalyptic number.

1311506330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311506330 is a deficient number, since it is larger than the sum of its proper divisors (1103408230).

1311506330 is a wasteful number, since it uses less digits than its factorization.

1311506330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 1311506330 is about 36214.7253199579. The cubic root of 1311506330 is about 1094.6034106565.

Adding to 1311506330 its reverse (336051131), we get a palindrome (1647557461).

The spelling of 1311506330 in words is "one billion, three hundred eleven million, five hundred six thousand, three hundred thirty".