136420031 has 16 divisors (see below), whose sum is σ = 154828800. Its totient is φ = 119061600.

The previous prime is 136420013. The next prime is 136420033. The reversal of 136420031 is 130024631.

136420031 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 136420031 - 2¹⁰ = 136419007 is a prime.

It is a super-2 number, since 2×136420031² = 37220849716081922, 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 = 136419985 and 136420012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136420033) 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, 59810 + ... + 62048.

It is an arithmetic number, because the mean of its divisors is an integer number (9676800).

Almost surely, 2^136420031 is an apocalyptic number.

136420031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136420031 is a deficient number, since it is larger than the sum of its proper divisors (18408769).

136420031 is a wasteful number, since it uses less digits than its factorization.

136420031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 136420031 is about 11679.8985868885. The cubic root of 136420031 is about 514.7851946103.

Adding to 136420031 its reverse (130024631), we get a palindrome (266444662).

The spelling of 136420031 in words is "one hundred thirty-six million, four hundred twenty thousand, thirty-one".