251113320432233 has 4 divisors (see below), whose sum is σ = 286986651922560. Its totient is φ = 215239988941908.

The previous prime is 251113320432223. The next prime is 251113320432283. The reversal of 251113320432233 is 332234023311152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 251113320432233 - 2²² = 251113316237929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 251113320432193 and 251113320432202.

It is not an unprimeable number, because it can be changed into a prime (251113320432223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17936665745153 + ... + 17936665745166.

It is an arithmetic number, because the mean of its divisors is an integer number (71746662980640).

Almost surely, 2^{251113320432233} is an apocalyptic number.

It is an amenable number.

251113320432233 is a deficient number, since it is larger than the sum of its proper divisors (35873331490327).

251113320432233 is an equidigital number, since it uses as much as digits as its factorization.

251113320432233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35873331490326.

The product of its (nonzero) digits is 77760, while the sum is 35.

Adding to 251113320432233 its reverse (332234023311152), we get a palindrome (583347343743385).

The spelling of 251113320432233 in words is "two hundred fifty-one trillion, one hundred thirteen billion, three hundred twenty million, four hundred thirty-two thousand, two hundred thirty-three".