231020427 has 8 divisors (see below), whose sum is σ = 336029760. Its totient is φ = 140012360.

The previous prime is 231020417. The next prime is 231020437. The reversal of 231020427 is 724020132.

It is an interprime number because it is at equal distance from previous prime (231020417) and next prime (231020437).

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 231020427 - 2⁸ = 231020171 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231020417) 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, 3500277 + ... + 3500342.

It is an arithmetic number, because the mean of its divisors is an integer number (42003720).

Almost surely, 2^231020427 is an apocalyptic number.

231020427 is a deficient number, since it is larger than the sum of its proper divisors (105009333).

231020427 is a wasteful number, since it uses less digits than its factorization.

231020427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7000633.

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 231020427 is about 15199.3561376790. The cubic root of 231020427 is about 613.5973294118.

Adding to 231020427 its reverse (724020132), we get a palindrome (955040559).

The spelling of 231020427 in words is "two hundred thirty-one million, twenty thousand, four hundred twenty-seven".