123465132391 has 2 divisors, whose sum is σ = 123465132392. Its totient is φ = 123465132390.

The previous prime is 123465132389. The next prime is 123465132403. The reversal of 123465132391 is 193231564321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123465132391 - 2¹ = 123465132389 is a prime.

Together with 123465132389, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123465132341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61732566195 + 61732566196.

It is an arithmetic number, because the mean of its divisors is an integer number (61732566196).

Almost surely, 2^123465132391 is an apocalyptic number.

123465132391 is a deficient number, since it is larger than the sum of its proper divisors (1).

123465132391 is an equidigital number, since it uses as much as digits as its factorization.

123465132391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 116640, while the sum is 40.

The spelling of 123465132391 in words is "one hundred twenty-three billion, four hundred sixty-five million, one hundred thirty-two thousand, three hundred ninety-one".