231149049 has 4 divisors (see below), whose sum is σ = 308198736. Its totient is φ = 154099364.

The previous prime is 231149033. The next prime is 231149081. The reversal of 231149049 is 940941132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 231149049 - 2⁴ = 231149033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231149099) 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 3 ways as a sum of consecutive naturals, for example, 38524839 + ... + 38524844.

It is an arithmetic number, because the mean of its divisors is an integer number (77049684).

Almost surely, 2^231149049 is an apocalyptic number.

It is an amenable number.

231149049 is a deficient number, since it is larger than the sum of its proper divisors (77049687).

231149049 is an equidigital number, since it uses as much as digits as its factorization.

231149049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77049686.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 231149049 is about 15203.5867149828. The cubic root of 231149049 is about 613.7111829419.

It can be divided in two parts, 2311 and 49049, that added together give a triangular number (51360 = T₃₂₀).

The spelling of 231149049 in words is "two hundred thirty-one million, one hundred forty-nine thousand, forty-nine".