2131483509 has 12 divisors (see below), whose sum is σ = 3087068556. Its totient is φ = 1417177152.

The previous prime is 2131483489. The next prime is 2131483513. The reversal of 2131483509 is 9053841312.

2131483509 is a `hidden beast` number, since 2 + 1 + 3 + 148 + 3 + 509 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1451838609 + 679644900 = 38103^2 + 26070^2 .

It is not a de Polignac number, because 2131483509 - 2⁸ = 2131483253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131483589) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 314112 + ... + 320825.

It is an arithmetic number, because the mean of its divisors is an integer number (257255713).

Almost surely, 2^2131483509 is an apocalyptic number.

It is an amenable number.

2131483509 is a deficient number, since it is larger than the sum of its proper divisors (955585047).

2131483509 is a wasteful number, since it uses less digits than its factorization.

2131483509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635316 (or 635313 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 2131483509 is about 46167.9922565407. The cubic root of 2131483509 is about 1286.9469915120.

The spelling of 2131483509 in words is "two billion, one hundred thirty-one million, four hundred eighty-three thousand, five hundred nine".