123347531819 has 2 divisors, whose sum is σ = 123347531820. Its totient is φ = 123347531818.

The previous prime is 123347531789. The next prime is 123347531831. The reversal of 123347531819 is 918135743321.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 123347531819 - 2⁸ = 123347531563 is a prime.

It is a super-2 number, since 2×123347531819² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (123347531119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61673765909 + 61673765910.

It is an arithmetic number, because the mean of its divisors is an integer number (61673765910).

Almost surely, 2^123347531819 is an apocalyptic number.

123347531819 is a deficient number, since it is larger than the sum of its proper divisors (1).

123347531819 is an equidigital number, since it uses as much as digits as its factorization.

123347531819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 47.

The spelling of 123347531819 in words is "one hundred twenty-three billion, three hundred forty-seven million, five hundred thirty-one thousand, eight hundred nineteen".