138010631 has 4 divisors (see below), whose sum is σ = 150557064. Its totient is φ = 125464200.

The previous prime is 138010619. The next prime is 138010751. The reversal of 138010631 is 136010831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 136010831 = 11 ⋅12364621.

It is a cyclic number.

It is not a de Polignac number, because 138010631 - 2⁶ = 138010567 is a prime.

It is a super-2 number, since 2×138010631² = 38093868538036322, 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 = 138010597 and 138010606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138010931) by changing a digit.

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, 6273200 + ... + 6273221.

It is an arithmetic number, because the mean of its divisors is an integer number (37639266).

Almost surely, 2^138010631 is an apocalyptic number.

138010631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138010631 is a deficient number, since it is larger than the sum of its proper divisors (12546433).

138010631 is a wasteful number, since it uses less digits than its factorization.

138010631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12546432.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 138010631 is about 11747.7926011655. The cubic root of 138010631 is about 516.7781947698.

The spelling of 138010631 in words is "one hundred thirty-eight million, ten thousand, six hundred thirty-one".