39930209131 has 4 divisors (see below), whose sum is σ = 40411296072. Its totient is φ = 39449122192.

The previous prime is 39930209129. The next prime is 39930209147. The reversal of 39930209131 is 13190203993.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 39930209131 - 2¹ = 39930209129 is a prime.

It is a super-2 number, since 2×39930209131² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (39930209171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240543346 + ... + 240543511.

It is an arithmetic number, because the mean of its divisors is an integer number (10102824018).

Almost surely, 2^39930209131 is an apocalyptic number.

39930209131 is a deficient number, since it is larger than the sum of its proper divisors (481086941).

39930209131 is an equidigital number, since it uses as much as digits as its factorization.

39930209131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481086940.

The product of its (nonzero) digits is 39366, while the sum is 40.

The spelling of 39930209131 in words is "thirty-nine billion, nine hundred thirty million, two hundred nine thousand, one hundred thirty-one".