136975971 has 32 divisors (see below), whose sum is σ = 209018880. Its totient is φ = 78980000.

The previous prime is 136975963. The next prime is 136975973. The reversal of 136975971 is 179579631.

It is not a de Polignac number, because 136975971 - 2³ = 136975963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136975971.

It is not an unprimeable number, because it can be changed into a prime (136975973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190150 + ... + 190868.

It is an arithmetic number, because the mean of its divisors is an integer number (6531840).

Almost surely, 2^136975971 is an apocalyptic number.

136975971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136975971 is a deficient number, since it is larger than the sum of its proper divisors (72042909).

136975971 is a wasteful number, since it uses less digits than its factorization.

136975971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007.

The product of its digits is 357210, while the sum is 48.

The square root of 136975971 is about 11703.6733976987. The cubic root of 136975971 is about 515.4835324226.

The spelling of 136975971 in words is "one hundred thirty-six million, nine hundred seventy-five thousand, nine hundred seventy-one".