1331113413 has 64 divisors (see below), whose sum is σ = 2194698240. Its totient is φ = 700419072.

The previous prime is 1331113409. The next prime is 1331113439. The reversal of 1331113413 is 3143111331.

It is not a de Polignac number, because 1331113413 - 2² = 1331113409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1331113413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331113493) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4948243 + ... + 4948511.

It is an arithmetic number, because the mean of its divisors is an integer number (34292160).

Almost surely, 2^1331113413 is an apocalyptic number.

It is an amenable number.

1331113413 is a deficient number, since it is larger than the sum of its proper divisors (863584827).

1331113413 is a wasteful number, since it uses less digits than its factorization.

1331113413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546.

The product of its digits is 324, while the sum is 21.

The square root of 1331113413 is about 36484.4269928966. The cubic root of 1331113413 is about 1100.0312423633.

Adding to 1331113413 its reverse (3143111331), we get a palindrome (4474224744).

The spelling of 1331113413 in words is "one billion, three hundred thirty-one million, one hundred thirteen thousand, four hundred thirteen".