231061149 has 12 divisors (see below), whose sum is σ = 364096512. Its totient is φ = 140037000.

The previous prime is 231061141. The next prime is 231061211. The reversal of 231061149 is 941160132.

231061149 is a `hidden beast` number, since 2 + 3 + 1 + 0 + 611 + 49 = 666.

It is not a de Polignac number, because 231061149 - 2³ = 231061141 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231061141) 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 11 ways as a sum of consecutive naturals, for example, 1166877 + ... + 1167074.

It is an arithmetic number, because the mean of its divisors is an integer number (30341376).

Almost surely, 2^231061149 is an apocalyptic number.

It is an amenable number.

231061149 is a deficient number, since it is larger than the sum of its proper divisors (133035363).

231061149 is a wasteful number, since it uses less digits than its factorization.

231061149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333968 (or 2333965 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 231061149 is about 15200.6956748696. The cubic root of 231061149 is about 613.6333802534.

The spelling of 231061149 in words is "two hundred thirty-one million, sixty-one thousand, one hundred forty-nine".