138850231 has 24 divisors (see below), whose sum is σ = 159561360. Its totient is φ = 120556800.

The previous prime is 138850211. The next prime is 138850247. The reversal of 138850231 is 132058831.

It is not a de Polignac number, because 138850231 - 2⁵ = 138850199 is a prime.

It is a super-2 number, since 2×138850231² = 38558773297506722, 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 = 138850193 and 138850202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138850211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 200596 + ... + 201286.

It is an arithmetic number, because the mean of its divisors is an integer number (6648390).

Almost surely, 2^138850231 is an apocalyptic number.

138850231 is a deficient number, since it is larger than the sum of its proper divisors (20711129).

138850231 is a wasteful number, since it uses less digits than its factorization.

138850231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 787 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 138850231 is about 11783.4727903110. The cubic root of 138850231 is about 517.8240322476.

The spelling of 138850231 in words is "one hundred thirty-eight million, eight hundred fifty thousand, two hundred thirty-one".