138031430 has 8 divisors (see below), whose sum is σ = 248456592. Its totient is φ = 55212568.

The previous prime is 138031427. The next prime is 138031459. The reversal of 138031430 is 34130831.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 138031396 and 138031405.

It is a congruent number.

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, 6901562 + ... + 6901581.

It is an arithmetic number, because the mean of its divisors is an integer number (31057074).

Almost surely, 2^138031430 is an apocalyptic number.

138031430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138031430 is a deficient number, since it is larger than the sum of its proper divisors (110425162).

138031430 is a wasteful number, since it uses less digits than its factorization.

138031430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13803150.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 138031430 is about 11748.6777979482. The cubic root of 138031430 is about 516.8041539530.

The spelling of 138031430 in words is "one hundred thirty-eight million, thirty-one thousand, four hundred thirty".