1213334131 has 2 divisors, whose sum is σ = 1213334132. Its totient is φ = 1213334130.

The previous prime is 1213334119. The next prime is 1213334147. The reversal of 1213334131 is 1314333121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1213334131 - 2¹⁷ = 1213203059 is a prime.

It is a super-2 number, since 2×1213334131² = 2944359426899050322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1213334191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606667065 + 606667066.

It is an arithmetic number, because the mean of its divisors is an integer number (606667066).

Almost surely, 2^1213334131 is an apocalyptic number.

1213334131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213334131 is an equidigital number, since it uses as much as digits as its factorization.

1213334131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

The square root of 1213334131 is about 34832.9460568583. The cubic root of 1213334131 is about 1066.5800877753.

Adding to 1213334131 its reverse (1314333121), we get a palindrome (2527667252).

It can be divided in two parts, 12133 and 34131, that added together give a palindrome (46264).

The spelling of 1213334131 in words is "one billion, two hundred thirteen million, three hundred thirty-four thousand, one hundred thirty-one".