231235451 has 4 divisors (see below), whose sum is σ = 231395400. Its totient is φ = 231075504.

The previous prime is 231235421. The next prime is 231235463. The reversal of 231235451 is 154532132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 231235451 - 2¹⁴ = 231219067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 231235451.

It is not an unprimeable number, because it can be changed into a prime (231235421) 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, 77786 + ... + 80703.

It is an arithmetic number, because the mean of its divisors is an integer number (57848850).

Almost surely, 2^231235451 is an apocalyptic number.

231235451 is a deficient number, since it is larger than the sum of its proper divisors (159949).

231235451 is a wasteful number, since it uses less digits than its factorization.

231235451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159948.

The product of its digits is 3600, while the sum is 26.

The square root of 231235451 is about 15206.4279500480. The cubic root of 231235451 is about 613.7876404893.

Adding to 231235451 its reverse (154532132), we get a palindrome (385767583).

The spelling of 231235451 in words is "two hundred thirty-one million, two hundred thirty-five thousand, four hundred fifty-one".