136431554 has 8 divisors (see below), whose sum is σ = 233882688. Its totient is φ = 58470660.

The previous prime is 136431521. The next prime is 136431569. The reversal of 136431554 is 455134631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×136431554² = 37227137853709832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136431554.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4872542 + ... + 4872569.

It is an arithmetic number, because the mean of its divisors is an integer number (29235336).

Almost surely, 2^136431554 is an apocalyptic number.

136431554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

136431554 is a deficient number, since it is larger than the sum of its proper divisors (97451134).

136431554 is an equidigital number, since it uses as much as digits as its factorization.

136431554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745120.

The product of its digits is 21600, while the sum is 32.

The square root of 136431554 is about 11680.3918598650. The cubic root of 136431554 is about 514.7996883342.

The spelling of 136431554 in words is "one hundred thirty-six million, four hundred thirty-one thousand, five hundred fifty-four".