136901531 has 4 divisors (see below), whose sum is σ = 147432432. Its totient is φ = 126370632.

The previous prime is 136901521. The next prime is 136901539. The reversal of 136901531 is 135109631.

136901531 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135109631 = 47 ⋅2874673.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-136901531 is a prime.

It is a super-2 number, since 2×136901531² = 37484058380287922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136901494 and 136901503.

It is not an unprimeable number, because it can be changed into a prime (136901539) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5265431 + ... + 5265456.

It is an arithmetic number, because the mean of its divisors is an integer number (36858108).

Almost surely, 2^136901531 is an apocalyptic number.

136901531 is a deficient number, since it is larger than the sum of its proper divisors (10530901).

136901531 is a wasteful number, since it uses less digits than its factorization.

136901531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10530900.

The product of its (nonzero) digits is 2430, while the sum is 29.

The square root of 136901531 is about 11700.4927674009. The cubic root of 136901531 is about 515.3901351472.

The spelling of 136901531 in words is "one hundred thirty-six million, nine hundred one thousand, five hundred thirty-one".