23145133412 has 48 divisors (see below), whose sum is σ = 43094710512. Its totient is φ = 10839121920.

The previous prime is 23145133411. The next prime is 23145133433. The reversal of 23145133412 is 21433154132.

It can be written as a sum of positive squares in 8 ways, for example, as 808037476 + 22337095936 = 28426^2 + 149456^2 .

It is not an unprimeable number, because it can be changed into a prime (23145133411) 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, 15928478 + ... + 15929930.

It is an arithmetic number, because the mean of its divisors is an integer number (897806469).

Almost surely, 2^23145133412 is an apocalyptic number.

It is an amenable number.

23145133412 is a deficient number, since it is larger than the sum of its proper divisors (19949577100).

23145133412 is a wasteful number, since it uses less digits than its factorization.

23145133412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2448 (or 2446 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

Adding to 23145133412 its reverse (21433154132), we get a palindrome (44578287544).

The spelling of 23145133412 in words is "twenty-three billion, one hundred forty-five million, one hundred thirty-three thousand, four hundred twelve".