138700310 has 32 divisors (see below), whose sum is σ = 286156800. Its totient is φ = 47416032.

The previous prime is 138700291. The next prime is 138700319. The reversal of 138700310 is 13007831.

It is a happy number.

It is a super-2 number, since 2×138700310² = 38475551988192200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138700319) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22991 + ... + 28389.

It is an arithmetic number, because the mean of its divisors is an integer number (8942400).

Almost surely, 2^138700310 is an apocalyptic number.

138700310 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138700310 is an abundant number, since it is smaller than the sum of its proper divisors (147456490).

138700310 is a wasteful number, since it uses less digits than its factorization.

138700310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5780.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 138700310 is about 11777.1095774812. The cubic root of 138700310 is about 517.6375947847.

The spelling of 138700310 in words is "one hundred thirty-eight million, seven hundred thousand, three hundred ten".