1331323123 has 8 divisors (see below), whose sum is σ = 1434033216. Its totient is φ = 1228656000.

The previous prime is 1331323121. The next prime is 1331323127. The reversal of 1331323123 is 3213231331.

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

It is not a de Polignac number, because 1331323123 - 2¹ = 1331323121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331323094 and 1331323103.

It is not an unprimeable number, because it can be changed into a prime (1331323121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85803 + ... + 100123.

It is an arithmetic number, because the mean of its divisors is an integer number (179254152).

Almost surely, 2^1331323123 is an apocalyptic number.

1331323123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1331323123 is a deficient number, since it is larger than the sum of its proper divisors (102710093).

1331323123 is a wasteful number, since it uses less digits than its factorization.

1331323123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21485.

The product of its digits is 972, while the sum is 22.

The square root of 1331323123 is about 36487.3008456367. The cubic root of 1331323123 is about 1100.0890073983.

Adding to 1331323123 its reverse (3213231331), we get a palindrome (4544554454).

The spelling of 1331323123 in words is "one billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty-three".