1171135481 has 8 divisors (see below), whose sum is σ = 1174758144. Its totient is φ = 1167519600.

The previous prime is 1171135447. The next prime is 1171135513. The reversal of 1171135481 is 1845311711.

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 1171135481 - 2¹⁴ = 1171119097 is a prime.

It is a super-2 number, since 2×1171135481² = 2743116629714202722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171135981) 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, 788966 + ... + 790448.

It is an arithmetic number, because the mean of its divisors is an integer number (146844768).

Almost surely, 2^1171135481 is an apocalyptic number.

It is an amenable number.

1171135481 is a deficient number, since it is larger than the sum of its proper divisors (3622663).

1171135481 is a wasteful number, since it uses less digits than its factorization.

1171135481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3391.

The product of its digits is 3360, while the sum is 32.

The square root of 1171135481 is about 34221.8567731209. The cubic root of 1171135481 is about 1054.0690127006.

The spelling of 1171135481 in words is "one billion, one hundred seventy-one million, one hundred thirty-five thousand, four hundred eighty-one".