135671731 has 8 divisors (see below), whose sum is σ = 146257664. Its totient is φ = 125107200.

The previous prime is 135671729. The next prime is 135671749. The reversal of 135671731 is 137176531.

135671731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135671731 - 2¹ = 135671729 is a prime.

It is a super-2 number, since 2×135671731² = 36813637185072722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135671231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9331 + ... + 18931.

It is an arithmetic number, because the mean of its divisors is an integer number (18282208).

Almost surely, 2^135671731 is an apocalyptic number.

135671731 is a deficient number, since it is larger than the sum of its proper divisors (10585933).

135671731 is a wasteful number, since it uses less digits than its factorization.

135671731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10701.

The product of its digits is 13230, while the sum is 34.

The square root of 135671731 is about 11647.8208691583. The cubic root of 135671731 is about 513.8422239783.

The spelling of 135671731 in words is "one hundred thirty-five million, six hundred seventy-one thousand, seven hundred thirty-one".