251223454323 has 12 divisors (see below), whose sum is σ = 362886861168. Its totient is φ = 167478362160.

The previous prime is 251223454319. The next prime is 251223454327. The reversal of 251223454323 is 323454322152.

251223454323 is a `hidden beast` number, since 2 + 51 + 2 + 234 + 54 + 323 = 666.

It is an interprime number because it is at equal distance from previous prime (251223454319) and next prime (251223454327).

It is not a de Polignac number, because 251223454323 - 2² = 251223454319 is a prime.

It is a super-2 number, since 2×251223454323² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (251223454327) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105538 + ... + 716648.

It is an arithmetic number, because the mean of its divisors is an integer number (30240571764).

Almost surely, 2^251223454323 is an apocalyptic number.

251223454323 is a deficient number, since it is larger than the sum of its proper divisors (111663406845).

251223454323 is a wasteful number, since it uses less digits than its factorization.

251223454323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656794 (or 656791 counting only the distinct ones).

The product of its digits is 172800, while the sum is 36.

Adding to 251223454323 its reverse (323454322152), we get a palindrome (574677776475).

The spelling of 251223454323 in words is "two hundred fifty-one billion, two hundred twenty-three million, four hundred fifty-four thousand, three hundred twenty-three".