103020436138 has 4 divisors (see below), whose sum is σ = 154530654210. Its totient is φ = 51510218068.

The previous prime is 103020436121. The next prime is 103020436139. The reversal of 103020436138 is 831634020301.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 99961571889 + 3058864249 = 316167^2 + 55307^2 .

It is a super-2 number, since 2×103020436138² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (103020436139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25755109033 + ... + 25755109036.

Almost surely, 2^103020436138 is an apocalyptic number.

103020436138 is a deficient number, since it is larger than the sum of its proper divisors (51510218072).

103020436138 is an equidigital number, since it uses as much as digits as its factorization.

103020436138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51510218071.

The product of its (nonzero) digits is 10368, while the sum is 31.

Adding to 103020436138 its reverse (831634020301), we get a palindrome (934654456439).

The spelling of 103020436138 in words is "one hundred three billion, twenty million, four hundred thirty-six thousand, one hundred thirty-eight".