23112434521 has 16 divisors (see below), whose sum is σ = 25315234560. Its totient is φ = 20926691280.

The previous prime is 23112434519. The next prime is 23112434531. The reversal of 23112434521 is 12543421132.

It is not a de Polignac number, because 23112434521 - 2¹ = 23112434519 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23112434521.

It is not an unprimeable number, because it can be changed into a prime (23112434531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7654150 + ... + 7657168.

It is an arithmetic number, because the mean of its divisors is an integer number (1582202160).

Almost surely, 2^23112434521 is an apocalyptic number.

It is an amenable number.

23112434521 is a deficient number, since it is larger than the sum of its proper divisors (2202800039).

23112434521 is a wasteful number, since it uses less digits than its factorization.

23112434521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5604.

The product of its digits is 5760, while the sum is 28.

Adding to 23112434521 its reverse (12543421132), we get a palindrome (35655855653).

The spelling of 23112434521 in words is "twenty-three billion, one hundred twelve million, four hundred thirty-four thousand, five hundred twenty-one".