23121231424 has 28 divisors (see below), whose sum is σ = 45890816524. Its totient is φ = 11558191104.

The previous prime is 23121231407. The next prime is 23121231431. The reversal of 23121231424 is 42413212132.

It can be written as a sum of positive squares in 2 ways, for example, as 10006401024 + 13114830400 = 100032^2 + 114520^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291904 + ... + 362560.

It is an arithmetic number, because the mean of its divisors is an integer number (1638957733).

Almost surely, 2^23121231424 is an apocalyptic number.

It is an amenable number.

23121231424 is a deficient number, since it is larger than the sum of its proper divisors (22769585100).

23121231424 is an equidigital number, since it uses as much as digits as its factorization.

23121231424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75782 (or 75772 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

Adding to 23121231424 its reverse (42413212132), we get a palindrome (65534443556).

The spelling of 23121231424 in words is "twenty-three billion, one hundred twenty-one million, two hundred thirty-one thousand, four hundred twenty-four".