138312435 has 8 divisors (see below), whose sum is σ = 221299920. Its totient is φ = 73766624.

The previous prime is 138312431. The next prime is 138312439. The reversal of 138312435 is 534213831.

It is an interprime number because it is at equal distance from previous prime (138312431) and next prime (138312439).

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

It is a cyclic number.

It is not a de Polignac number, because 138312435 - 2² = 138312431 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138312431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4610400 + ... + 4610429.

It is an arithmetic number, because the mean of its divisors is an integer number (27662490).

Almost surely, 2^138312435 is an apocalyptic number.

138312435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138312435 is a deficient number, since it is larger than the sum of its proper divisors (82987485).

138312435 is an equidigital number, since it uses as much as digits as its factorization.

138312435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9220837.

The product of its digits is 8640, while the sum is 30.

The square root of 138312435 is about 11760.6307228822. The cubic root of 138312435 is about 517.1546202997.

The spelling of 138312435 in words is "one hundred thirty-eight million, three hundred twelve thousand, four hundred thirty-five".