20512412532131 has 8 divisors (see below), whose sum is σ = 22090336773120. Its totient is φ = 18934494913152.

The previous prime is 20512412532103. The next prime is 20512412532149. The reversal of 20512412532131 is 13123521421502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20512412532131 - 2⁶ = 20512412532067 is a prime.

It is a super-2 number, since 2×20512412532131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20512412522131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6136286 + ... + 8870108.

It is an arithmetic number, because the mean of its divisors is an integer number (2761292096640).

Almost surely, 2^{20512412532131} is an apocalyptic number.

20512412532131 is a deficient number, since it is larger than the sum of its proper divisors (1577924240989).

20512412532131 is a wasteful number, since it uses less digits than its factorization.

20512412532131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3311005.

The product of its (nonzero) digits is 14400, while the sum is 32.

Adding to 20512412532131 its reverse (13123521421502), we get a palindrome (33635933953633).

The spelling of 20512412532131 in words is "twenty trillion, five hundred twelve billion, four hundred twelve million, five hundred thirty-two thousand, one hundred thirty-one".