231087949 has 8 divisors (see below), whose sum is σ = 232864632. Its totient is φ = 229317120.

The previous prime is 231087943. The next prime is 231087959. The reversal of 231087949 is 949780132.

It can be written as a sum of positive squares in 4 ways, for example, as 4796100 + 226291849 = 2190^2 + 15043^2 .

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 231087949 - 2¹⁷ = 230956877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231087943) 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, 106257 + ... + 108409.

It is an arithmetic number, because the mean of its divisors is an integer number (29108079).

Almost surely, 2^231087949 is an apocalyptic number.

It is an amenable number.

231087949 is a deficient number, since it is larger than the sum of its proper divisors (1776683).

231087949 is a wasteful number, since it uses less digits than its factorization.

231087949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2927.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 231087949 is about 15201.5771879105. The cubic root of 231087949 is about 613.6571037553.

The spelling of 231087949 in words is "two hundred thirty-one million, eighty-seven thousand, nine hundred forty-nine".