1331023413 has 8 divisors (see below), whose sum is σ = 1774952608. Its totient is φ = 887221584.

The previous prime is 1331023403. The next prime is 1331023417. The reversal of 1331023413 is 3143201331.

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

It is not a de Polignac number, because 1331023413 - 2⁸ = 1331023157 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1331023413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331023417) 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, 3970 + ... + 51747.

It is an arithmetic number, because the mean of its divisors is an integer number (221869076).

Almost surely, 2^1331023413 is an apocalyptic number.

It is an amenable number.

1331023413 is a deficient number, since it is larger than the sum of its proper divisors (443929195).

1331023413 is an equidigital number, since it uses as much as digits as its factorization.

1331023413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63683.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 1331023413 is about 36483.1935690942. The cubic root of 1331023413 is about 1100.0064498244.

Adding to 1331023413 its reverse (3143201331), we get a palindrome (4474224744).

The spelling of 1331023413 in words is "one billion, three hundred thirty-one million, twenty-three thousand, four hundred thirteen".