1331330331 has 8 divisors (see below), whose sum is σ = 1775777040. Its totient is φ = 887218592.

The previous prime is 1331330303. The next prime is 1331330359. The reversal of 1331330331 is 1330331331.

It is an interprime number because it is at equal distance from previous prime (1331330303) and next prime (1331330359).

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

It is a cyclic number.

It is not a de Polignac number, because 1331330331 - 2²³ = 1322941723 is a prime.

It is a super-2 number, since 2×1331330331² = 3544880900481139122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1331330298 and 1331330307.

It is not an unprimeable number, because it can be changed into a prime (1331330381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74316 + ... + 90473.

It is an arithmetic number, because the mean of its divisors is an integer number (221972130).

Almost surely, 2^1331330331 is an apocalyptic number.

1331330331 is a deficient number, since it is larger than the sum of its proper divisors (444446709).

1331330331 is a wasteful number, since it uses less digits than its factorization.

1331330331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167485.

The product of its (nonzero) digits is 729, while the sum is 21.

The square root of 1331330331 is about 36487.3996195947. The cubic root of 1331330331 is about 1100.0909927483.

Adding to 1331330331 its reverse (1330331331), we get a palindrome (2661661662).

The spelling of 1331330331 in words is "one billion, three hundred thirty-one million, three hundred thirty thousand, three hundred thirty-one".