1151212311 has 32 divisors (see below), whose sum is σ = 1793802240. Its totient is φ = 728676000.

The previous prime is 1151212267. The next prime is 1151212327. The reversal of 1151212311 is 1132121511.

It is not a de Polignac number, because 1151212311 - 2²² = 1147018007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151213311) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31386 + ... + 57336.

It is an arithmetic number, because the mean of its divisors is an integer number (56056320).

Almost surely, 2^1151212311 is an apocalyptic number.

1151212311 is a deficient number, since it is larger than the sum of its proper divisors (642589929).

1151212311 is a wasteful number, since it uses less digits than its factorization.

1151212311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26044 (or 26038 counting only the distinct ones).

The product of its digits is 60, while the sum is 18.

The square root of 1151212311 is about 33929.5197578746. The cubic root of 1151212311 is about 1048.0575762198.

Adding to 1151212311 its reverse (1132121511), we get a palindrome (2283333822).

The spelling of 1151212311 in words is "one billion, one hundred fifty-one million, two hundred twelve thousand, three hundred eleven".