136431031 has 16 divisors (see below), whose sum is σ = 154211328. Its totient is φ = 119577600.

The previous prime is 136431011. The next prime is 136431041. The reversal of 136431031 is 130134631.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 136431031 - 2¹¹ = 136428983 is a prime.

It is a super-2 number, since 2×136431031² = 37226852439445922, 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 = 136430993 and 136431011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136431011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117751 + ... + 118903.

It is an arithmetic number, because the mean of its divisors is an integer number (9638208).

Almost surely, 2^136431031 is an apocalyptic number.

136431031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

136431031 is a deficient number, since it is larger than the sum of its proper divisors (17780297).

136431031 is a wasteful number, since it uses less digits than its factorization.

136431031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 136431031 is about 11680.3694718960. The cubic root of 136431031 is about 514.7990305181.

Adding to 136431031 its reverse (130134631), we get a palindrome (266565662).

The spelling of 136431031 in words is "one hundred thirty-six million, four hundred thirty-one thousand, thirty-one".