1213331213131 has 8 divisors (see below), whose sum is σ = 1227041395200. Its totient is φ = 1199622747840.

The previous prime is 1213331213057. The next prime is 1213331213177. The reversal of 1213331213131 is 1313121333121.

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 1213331213131 - 2⁹ = 1213331212619 is a prime.

It is a super-2 number, since 2×1213331213131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213331213096 and 1213331213105.

It is not an unprimeable number, because it can be changed into a prime (1213331223131) 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, 1019766 + ... + 1861876.

It is an arithmetic number, because the mean of its divisors is an integer number (153380174400).

Almost surely, 2^{1213331213131} is an apocalyptic number.

1213331213131 is a deficient number, since it is larger than the sum of its proper divisors (13710182069).

1213331213131 is an equidigital number, since it uses as much as digits as its factorization.

1213331213131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858389.

The product of its digits is 972, while the sum is 25.

Adding to 1213331213131 its reverse (1313121333121), we get a palindrome (2526452546252).

The spelling of 1213331213131 in words is "one trillion, two hundred thirteen billion, three hundred thirty-one million, two hundred thirteen thousand, one hundred thirty-one".