1151231532 has 48 divisors (see below), whose sum is σ = 2959455744. Its totient is φ = 345400000.

The previous prime is 1151231509. The next prime is 1151231533. The reversal of 1151231532 is 2351321511.

It is not an unprimeable number, because it can be changed into a prime (1151231533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29844 + ... + 56507.

It is an arithmetic number, because the mean of its divisors is an integer number (61655328).

Almost surely, 2^1151231532 is an apocalyptic number.

1151231532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1151231532 is an abundant number, since it is smaller than the sum of its proper divisors (1808224212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1151231532 is a wasteful number, since it uses less digits than its factorization.

1151231532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86470 (or 86468 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 1151231532 is about 33929.8030056173. The cubic root of 1151231532 is about 1048.0634090861.

The spelling of 1151231532 in words is "one billion, one hundred fifty-one million, two hundred thirty-one thousand, five hundred thirty-two".