231204451 has 2 divisors, whose sum is σ = 231204452. Its totient is φ = 231204450.

The previous prime is 231204433. The next prime is 231204469. The reversal of 231204451 is 154402132.

It is a balanced prime because it is at equal distance from previous prime (231204433) and next prime (231204469).

It is a cyclic number.

It is not a de Polignac number, because 231204451 - 2²³ = 222815843 is a prime.

It is a super-2 number, since 2×231204451² = 106910996324422802, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231204401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115602225 + 115602226.

It is an arithmetic number, because the mean of its divisors is an integer number (115602226).

Almost surely, 2^231204451 is an apocalyptic number.

231204451 is a deficient number, since it is larger than the sum of its proper divisors (1).

231204451 is an equidigital number, since it uses as much as digits as its factorization.

231204451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 231204451 is about 15205.4086100966. The cubic root of 231204451 is about 613.7602106306.

Adding to 231204451 its reverse (154402132), we get a palindrome (385606583).

The spelling of 231204451 in words is "two hundred thirty-one million, two hundred four thousand, four hundred fifty-one".