123031379 has 2 divisors, whose sum is σ = 123031380. Its totient is φ = 123031378.

The previous prime is 123031373. The next prime is 123031409. The reversal of 123031379 is 973130321.

It is a weak prime.

It is an emirp because it is prime and its reverse (973130321) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123031379 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (123031373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61515689 + 61515690.

It is an arithmetic number, because the mean of its divisors is an integer number (61515690).

Almost surely, 2^123031379 is an apocalyptic number.

123031379 is a deficient number, since it is larger than the sum of its proper divisors (1).

123031379 is an equidigital number, since it uses as much as digits as its factorization.

123031379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3402, while the sum is 29.

The square root of 123031379 is about 11091.9510907685. The cubic root of 123031379 is about 497.3612707131.

The spelling of 123031379 in words is "one hundred twenty-three million, thirty-one thousand, three hundred seventy-nine".