135931940 has 12 divisors (see below), whose sum is σ = 285457116. Its totient is φ = 54372768.

The previous prime is 135931937. The next prime is 135931963. The reversal of 135931940 is 49139531.

It can be written as a sum of positive squares in 2 ways, for example, as 43349056 + 92582884 = 6584^2 + 9622^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 135931940.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3398279 + ... + 3398318.

It is an arithmetic number, because the mean of its divisors is an integer number (23788093).

Almost surely, 2^135931940 is an apocalyptic number.

135931940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135931940 is an abundant number, since it is smaller than the sum of its proper divisors (149525176).

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

135931940 is a wasteful number, since it uses less digits than its factorization.

135931940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6796606 (or 6796604 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 135931940 is about 11658.9853760951. The cubic root of 135931940 is about 514.1705188053.

The spelling of 135931940 in words is "one hundred thirty-five million, nine hundred thirty-one thousand, nine hundred forty".