135831998 has 16 divisors (see below), whose sum is σ = 211081680. Its totient is φ = 65478336.

The previous prime is 135831979. The next prime is 135832001. The reversal of 135831998 is 899138531.

135831998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 53690 + ... + 56162.

It is an arithmetic number, because the mean of its divisors is an integer number (13192605).

Almost surely, 2^135831998 is an apocalyptic number.

135831998 is a deficient number, since it is larger than the sum of its proper divisors (75249682).

135831998 is a wasteful number, since it uses less digits than its factorization.

135831998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3451.

The product of its digits is 233280, while the sum is 47.

The square root of 135831998 is about 11654.6985374998. The cubic root of 135831998 is about 514.0444757550.

The spelling of 135831998 in words is "one hundred thirty-five million, eight hundred thirty-one thousand, nine hundred ninety-eight".