123078213 has 6 divisors (see below), whose sum is σ = 177779654. Its totient is φ = 82052136.

The previous prime is 123078211. The next prime is 123078217. The reversal of 123078213 is 312870321.

It can be written as a sum of positive squares in only one way, i.e., 77475204 + 45603009 = 8802^2 + 6753^2 .

It is not a de Polignac number, because 123078213 - 2¹ = 123078211 is a prime.

It is a super-3 number, since 3×123078213³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123078211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6837670 + ... + 6837687.

Almost surely, 2^123078213 is an apocalyptic number.

It is an amenable number.

123078213 is a deficient number, since it is larger than the sum of its proper divisors (54701441).

123078213 is a wasteful number, since it uses less digits than its factorization.

123078213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13675363 (or 13675360 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 123078213 is about 11094.0620603997. The cubic root of 123078213 is about 497.4243724001.

The spelling of 123078213 in words is "one hundred twenty-three million, seventy-eight thousand, two hundred thirteen".