1311253330 has 8 divisors (see below), whose sum is σ = 2360256012. Its totient is φ = 524501328.

The previous prime is 1311253271. The next prime is 1311253343. The reversal of 1311253330 is 333521131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1305593689 + 5659641 = 36133^2 + 2379^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65562657 + ... + 65562676.

Almost surely, 2^1311253330 is an apocalyptic number.

1311253330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311253330 is a deficient number, since it is larger than the sum of its proper divisors (1049002682).

1311253330 is a wasteful number, since it uses less digits than its factorization.

1311253330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131125340.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1311253330 is about 36211.2320972375. The cubic root of 1311253330 is about 1094.5330202294.

Adding to 1311253330 its reverse (333521131), we get a palindrome (1644774461).

The spelling of 1311253330 in words is "one billion, three hundred eleven million, two hundred fifty-three thousand, three hundred thirty".