1213131413 has 8 divisors (see below), whose sum is σ = 1325949408. Its totient is φ = 1103099184.

The previous prime is 1213131379. The next prime is 1213131419. The reversal of 1213131413 is 3141313121.

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

It is a cyclic number.

It is not a de Polignac number, because 1213131413 - 2⁶ = 1213131349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213131419) 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, 695531 + ... + 697272.

It is an arithmetic number, because the mean of its divisors is an integer number (165743676).

Almost surely, 2^1213131413 is an apocalyptic number.

1213131413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1213131413 is a deficient number, since it is larger than the sum of its proper divisors (112817995).

1213131413 is a wasteful number, since it uses less digits than its factorization.

1213131413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392883.

The product of its digits is 216, while the sum is 20.

The square root of 1213131413 is about 34830.0360752038. The cubic root of 1213131413 is about 1066.5206847856.

Adding to 1213131413 its reverse (3141313121), we get a palindrome (4354444534).

The spelling of 1213131413 in words is "one billion, two hundred thirteen million, one hundred thirty-one thousand, four hundred thirteen".