12520231434 has 48 divisors (see below), whose sum is σ = 28734643080. Its totient is φ = 3926307840.

The previous prime is 12520231397. The next prime is 12520231483. The reversal of 12520231434 is 43413202521.

12520231434 is a `hidden beast` number, since 1 + 25 + 202 + 3 + 1 + 434 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 8955783225 + 3564448209 = 94635^2 + 59703^2 .

It is a super-3 number, since 3×12520231434³ (a number of 31 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12520231398 and 12520231407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 901624 + ... + 915404.

Almost surely, 2^12520231434 is an apocalyptic number.

12520231434 is an abundant number, since it is smaller than the sum of its proper divisors (16214411646).

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

12520231434 is a wasteful number, since it uses less digits than its factorization.

12520231434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16775 (or 16772 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

Adding to 12520231434 its reverse (43413202521), we get a palindrome (55933433955).

The spelling of 12520231434 in words is "twelve billion, five hundred twenty million, two hundred thirty-one thousand, four hundred thirty-four".