231486106509 has 48 divisors (see below), whose sum is σ = 392599742080. Its totient is φ = 128658119040.

The previous prime is 231486106507. The next prime is 231486106513. The reversal of 231486106509 is 905601684132.

231486106509 is a `hidden beast` number, since 2 + 31 + 4 + 8 + 6 + 106 + 509 = 666.

It is not a de Polignac number, because 231486106509 - 2¹ = 231486106507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231486106507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7399302 + ... + 7430520.

Almost surely, 2^231486106509 is an apocalyptic number.

It is an amenable number.

231486106509 is a deficient number, since it is larger than the sum of its proper divisors (161113635571).

231486106509 is a wasteful number, since it uses less digits than its factorization.

231486106509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34450 (or 34447 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 231486106509 in words is "two hundred thirty-one billion, four hundred eighty-six million, one hundred six thousand, five hundred nine".