1311121330 has 32 divisors (see below), whose sum is σ = 2387828736. Its totient is φ = 518301504.

The previous prime is 1311121321. The next prime is 1311121387. The reversal of 1311121330 is 331211131.

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, 349927 + ... + 353653.

It is an arithmetic number, because the mean of its divisors is an integer number (74619648).

Almost surely, 2^1311121330 is an apocalyptic number.

1311121330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1311121330 is a deficient number, since it is larger than the sum of its proper divisors (1076707406).

1311121330 is a wasteful number, since it uses less digits than its factorization.

1311121330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4138.

The product of its (nonzero) digits is 54, while the sum is 16.

The square root of 1311121330 is about 36209.4094124718. The cubic root of 1311121330 is about 1094.4962911947.

Adding to 1311121330 its reverse (331211131), we get a palindrome (1642332461).

The spelling of 1311121330 in words is "one billion, three hundred eleven million, one hundred twenty-one thousand, three hundred thirty".