1213331151 has 8 divisors (see below), whose sum is σ = 1619170560. Its totient is φ = 808189592.

The previous prime is 1213331137. The next prime is 1213331159. The reversal of 1213331151 is 1511333121.

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 1213331151 - 2⁷ = 1213331023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213331159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170391 + ... + 177368.

It is an arithmetic number, because the mean of its divisors is an integer number (202396320).

Almost surely, 2^1213331151 is an apocalyptic number.

1213331151 is a deficient number, since it is larger than the sum of its proper divisors (405839409).

1213331151 is a wasteful number, since it uses less digits than its factorization.

1213331151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348925.

The product of its digits is 270, while the sum is 21.

The square root of 1213331151 is about 34832.9032812368. The cubic root of 1213331151 is about 1066.5792145860.

Adding to 1213331151 its reverse (1511333121), we get a palindrome (2724664272).

The spelling of 1213331151 in words is "one billion, two hundred thirteen million, three hundred thirty-one thousand, one hundred fifty-one".