135747931 has 8 divisors (see below), whose sum is σ = 152091504. Its totient is φ = 120071520.

The previous prime is 135747881. The next prime is 135747971. The reversal of 135747931 is 139747531.

135747931 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 135747931 - 2⁷ = 135747803 is a prime.

It is a super-2 number, since 2×135747931² = 36855001541561522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135747971) 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, 166360 + ... + 167173.

It is an arithmetic number, because the mean of its divisors is an integer number (19011438).

Almost surely, 2^135747931 is an apocalyptic number.

135747931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135747931 is a deficient number, since it is larger than the sum of its proper divisors (16343573).

135747931 is a wasteful number, since it uses less digits than its factorization.

135747931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333581.

The product of its digits is 79380, while the sum is 40.

The square root of 135747931 is about 11651.0914081042. The cubic root of 135747931 is about 513.9384057671.

The spelling of 135747931 in words is "one hundred thirty-five million, seven hundred forty-seven thousand, nine hundred thirty-one".