123031378 has 4 divisors (see below), whose sum is σ = 184547070. Its totient is φ = 61515688.

The previous prime is 123031373. The next prime is 123031379. The reversal of 123031378 is 873130321.

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., 118222129 + 4809249 = 10873^2 + 2193^2 .

It is not an unprimeable number, because it can be changed into a prime (123031373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30757843 + ... + 30757846.

Almost surely, 2^123031378 is an apocalyptic number.

123031378 is a deficient number, since it is larger than the sum of its proper divisors (61515692).

123031378 is an equidigital number, since it uses as much as digits as its factorization.

123031378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61515691.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 123031378 is about 11091.9510456907. The cubic root of 123031378 is about 497.3612693656.

Adding to 123031378 its reverse (873130321), we get a palindrome (996161699).

The spelling of 123031378 in words is "one hundred twenty-three million, thirty-one thousand, three hundred seventy-eight".