136405347 has 16 divisors (see below), whose sum is σ = 201159840. Its totient is φ = 81672192.

The previous prime is 136405337. The next prime is 136405349. The reversal of 136405347 is 743504631.

It is not a de Polignac number, because 136405347 - 2²² = 132211043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136405349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45822 + ... + 48707.

It is an arithmetic number, because the mean of its divisors is an integer number (12572490).

Almost surely, 2^136405347 is an apocalyptic number.

136405347 is a deficient number, since it is larger than the sum of its proper divisors (64754493).

136405347 is a wasteful number, since it uses less digits than its factorization.

136405347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94582.

The product of its (nonzero) digits is 30240, while the sum is 33.

The square root of 136405347 is about 11679.2699686239. The cubic root of 136405347 is about 514.7667237719.

Adding to 136405347 its reverse (743504631), we get a palindrome (879909978).

The spelling of 136405347 in words is "one hundred thirty-six million, four hundred five thousand, three hundred forty-seven".