2251323430 has 16 divisors (see below), whose sum is σ = 4290757920. Its totient is φ = 847556992.

The previous prime is 2251323409. The next prime is 2251323439. The reversal of 2251323430 is 343231522.

It is a junction number, because it is equal to n+sod(n) for n = 2251323395 and 2251323404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251323439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6621370 + ... + 6621709.

It is an arithmetic number, because the mean of its divisors is an integer number (268172370).

Almost surely, 2^2251323430 is an apocalyptic number.

2251323430 is a deficient number, since it is larger than the sum of its proper divisors (2039434490).

2251323430 is a wasteful number, since it uses less digits than its factorization.

2251323430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13243103.

The product of its (nonzero) digits is 4320, while the sum is 25.

The square root of 2251323430 is about 47448.1130288655. The cubic root of 2251323430 is about 1310.6275628811.

Adding to 2251323430 its reverse (343231522), we get a palindrome (2594554952).

The spelling of 2251323430 in words is "two billion, two hundred fifty-one million, three hundred twenty-three thousand, four hundred thirty".