1331342331 has 16 divisors (see below), whose sum is σ = 2038419840. Its totient is φ = 764406720.

The previous prime is 1331342297. The next prime is 1331342339. The reversal of 1331342331 is 1332431331.

It is a happy number.

It is not a de Polignac number, because 1331342331 - 2⁹ = 1331341819 is a prime.

It is a super-2 number, since 2×1331342331² = 3544944804625027122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1331342339) 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, 1061050 + ... + 1062303.

It is an arithmetic number, because the mean of its divisors is an integer number (127401240).

Almost surely, 2^1331342331 is an apocalyptic number.

1331342331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1331342331 is a deficient number, since it is larger than the sum of its proper divisors (707077509).

1331342331 is a wasteful number, since it uses less digits than its factorization.

1331342331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2123386.

The product of its digits is 1944, while the sum is 24.

The square root of 1331342331 is about 36487.5640595532. The cubic root of 1331342331 is about 1100.0942979766.

Adding to 1331342331 its reverse (1332431331), we get a palindrome (2663773662).

The spelling of 1331342331 in words is "one billion, three hundred thirty-one million, three hundred forty-two thousand, three hundred thirty-one".