230571621 has 24 divisors (see below), whose sum is σ = 381810624. Its totient is φ = 131345280.

The previous prime is 230571617. The next prime is 230571637. The reversal of 230571621 is 126175032.

It is a happy number.

230571621 is a `hidden beast` number, since 2 + 30 + 5 + 7 + 1 + 621 = 666.

It is not a de Polignac number, because 230571621 - 2² = 230571617 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (230570621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15325 + ... + 26381.

It is an arithmetic number, because the mean of its divisors is an integer number (15908776).

Almost surely, 2^230571621 is an apocalyptic number.

230571621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

230571621 is a deficient number, since it is larger than the sum of its proper divisors (151239003).

230571621 is a wasteful number, since it uses less digits than its factorization.

230571621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11401 (or 11398 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 230571621 is about 15184.5849795113. The cubic root of 230571621 is about 613.1997243295.

The spelling of 230571621 in words is "two hundred thirty million, five hundred seventy-one thousand, six hundred twenty-one".