12731420530 has 16 divisors (see below), whose sum is σ = 24264590040. Its totient is φ = 4793005312.

The previous prime is 12731420519. The next prime is 12731420561. The reversal of 12731420530 is 3502413721.

It can be written as a sum of positive squares in 4 ways, for example, as 7537191489 + 5194229041 = 86817^2 + 72071^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37445185 + ... + 37445524.

Almost surely, 2^12731420530 is an apocalyptic number.

12731420530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12731420530 is a deficient number, since it is larger than the sum of its proper divisors (11533169510).

12731420530 is a wasteful number, since it uses less digits than its factorization.

12731420530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74890733.

The product of its (nonzero) digits is 5040, while the sum is 28.

The spelling of 12731420530 in words is "twelve billion, seven hundred thirty-one million, four hundred twenty thousand, five hundred thirty".