1251330423 has 16 divisors (see below), whose sum is σ = 1907385600. Its totient is φ = 714822336.

The previous prime is 1251330389. The next prime is 1251330497. The reversal of 1251330423 is 3240331521.

It is not a de Polignac number, because 1251330423 - 2⁶ = 1251330359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1251330393 and 1251330402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1251330523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78811 + ... + 93347.

It is an arithmetic number, because the mean of its divisors is an integer number (119211600).

Almost surely, 2^1251330423 is an apocalyptic number.

1251330423 is a deficient number, since it is larger than the sum of its proper divisors (656055177).

1251330423 is a wasteful number, since it uses less digits than its factorization.

1251330423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18646.

The product of its (nonzero) digits is 2160, while the sum is 24.

The square root of 1251330423 is about 35374.1490781050. The cubic root of 1251330423 is about 1077.5993841035.

Adding to 1251330423 its reverse (3240331521), we get a palindrome (4491661944).

The spelling of 1251330423 in words is "one billion, two hundred fifty-one million, three hundred thirty thousand, four hundred twenty-three".