231741381 has 4 divisors (see below), whose sum is σ = 308988512. Its totient is φ = 154494252.

The previous prime is 231741343. The next prime is 231741383. The reversal of 231741381 is 183147132.

231741381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 not a de Polignac number, because 231741381 - 2¹⁰ = 231740357 is a prime.

It is a super-2 number, since 2×231741381² = 107408135335574322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231741383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38623561 + ... + 38623566.

It is an arithmetic number, because the mean of its divisors is an integer number (77247128).

Almost surely, 2^231741381 is an apocalyptic number.

It is an amenable number.

231741381 is a deficient number, since it is larger than the sum of its proper divisors (77247131).

231741381 is an equidigital number, since it uses as much as digits as its factorization.

231741381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77247130.

The product of its digits is 4032, while the sum is 30.

The square root of 231741381 is about 15223.0542599046. The cubic root of 231741381 is about 614.2349585482.

The spelling of 231741381 in words is "two hundred thirty-one million, seven hundred forty-one thousand, three hundred eighty-one".