20131254612 has 72 divisors (see below), whose sum is σ = 58171329216. Its totient is φ = 5750365824.

The previous prime is 20131254589. The next prime is 20131254613. The reversal of 20131254612 is 21645213102.

20131254612 is a `hidden beast` number, since 20 + 1 + 3 + 1 + 25 + 4 + 612 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131254613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1425088 + ... + 1439144.

It is an arithmetic number, because the mean of its divisors is an integer number (807935128).

Almost surely, 2^20131254612 is an apocalyptic number.

It is an amenable number.

20131254612 is an abundant number, since it is smaller than the sum of its proper divisors (38040074604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20131254612 is a wasteful number, since it uses less digits than its factorization.

20131254612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19757 (or 19752 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

Adding to 20131254612 its reverse (21645213102), we get a palindrome (41776467714).

The spelling of 20131254612 in words is "twenty billion, one hundred thirty-one million, two hundred fifty-four thousand, six hundred twelve".