231982061 has 4 divisors (see below), whose sum is σ = 233148000. Its totient is φ = 230816124.

The previous prime is 231982057. The next prime is 231982067. The reversal of 231982061 is 160289132.

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 231982061 - 2² = 231982057 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 (231982067) 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, 582671 + ... + 583068.

It is an arithmetic number, because the mean of its divisors is an integer number (58287000).

Almost surely, 2^231982061 is an apocalyptic number.

It is an amenable number.

231982061 is a deficient number, since it is larger than the sum of its proper divisors (1165939).

231982061 is a wasteful number, since it uses less digits than its factorization.

231982061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165938.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 231982061 is about 15230.9573238191. The cubic root of 231982061 is about 614.4475272889.

The spelling of 231982061 in words is "two hundred thirty-one million, nine hundred eighty-two thousand, sixty-one".