231761349 has 12 divisors (see below), whose sum is σ = 339353196. Its totient is φ = 152390592.

The previous prime is 231761347. The next prime is 231761351. The reversal of 231761349 is 943167132.

231761349 is a `hidden beast` number, since 2 + 31 + 7 + 613 + 4 + 9 = 666.

231761349 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (231761347) and next prime (231761351).

It can be written as a sum of positive squares in 2 ways, for example, as 87329025 + 144432324 = 9345^2 + 12018^2 .

It is not a de Polignac number, because 231761349 - 2¹ = 231761347 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 (231761347) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175722 + ... + 177035.

It is an arithmetic number, because the mean of its divisors is an integer number (28279433).

Almost surely, 2^231761349 is an apocalyptic number.

It is an amenable number.

231761349 is a deficient number, since it is larger than the sum of its proper divisors (107591847).

231761349 is a wasteful number, since it uses less digits than its factorization.

231761349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352836 (or 352833 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 231761349 is about 15223.7100931409. The cubic root of 231761349 is about 614.2525998967.

The spelling of 231761349 in words is "two hundred thirty-one million, seven hundred sixty-one thousand, three hundred forty-nine".