1331001423 has 8 divisors (see below), whose sum is σ = 1971854000. Its totient is φ = 887334264.

The previous prime is 1331001391. The next prime is 1331001449. The reversal of 1331001423 is 3241001331.

It is not a de Polignac number, because 1331001423 - 2⁵ = 1331001391 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1331001396 and 1331001405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331001493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24648148 + ... + 24648201.

It is an arithmetic number, because the mean of its divisors is an integer number (246481750).

Almost surely, 2^1331001423 is an apocalyptic number.

1331001423 is a deficient number, since it is larger than the sum of its proper divisors (640852577).

1331001423 is an equidigital number, since it uses as much as digits as its factorization.

1331001423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49296358 (or 49296352 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1331001423 is about 36482.8921962062. The cubic root of 1331001423 is about 1100.0003920109. Note that the first 3 decimals are identical.

Adding to 1331001423 its reverse (3241001331), we get a palindrome (4572002754).

The spelling of 1331001423 in words is "one billion, three hundred thirty-one million, one thousand, four hundred twenty-three".