231421035451 has 4 divisors (see below), whose sum is σ = 231423589792. Its totient is φ = 231418481112.

The previous prime is 231421035449. The next prime is 231421035467. The reversal of 231421035451 is 154530124132.

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 231421035451 - 2¹ = 231421035449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231421035431) 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, 1136076 + ... + 1324201.

It is an arithmetic number, because the mean of its divisors is an integer number (57855897448).

Almost surely, 2^231421035451 is an apocalyptic number.

231421035451 is a deficient number, since it is larger than the sum of its proper divisors (2554341).

231421035451 is an equidigital number, since it uses as much as digits as its factorization.

231421035451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2554340.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 231421035451 its reverse (154530124132), we get a palindrome (385951159583).

The spelling of 231421035451 in words is "two hundred thirty-one billion, four hundred twenty-one million, thirty-five thousand, four hundred fifty-one".