1423905896731 has 2 divisors, whose sum is σ = 1423905896732. Its totient is φ = 1423905896730.

The previous prime is 1423905896687. The next prime is 1423905896737. The reversal of 1423905896731 is 1376985093241.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1423905896731 is a prime.

It is a super-2 number, since 2×1423905896731² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1423905896737) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711952948365 + 711952948366.

It is an arithmetic number, because the mean of its divisors is an integer number (711952948366).

It is a 1-persistent number, because it is pandigital, but 2⋅1423905896731 = 2847811793462 is not.

Almost surely, 2^{1423905896731} is an apocalyptic number.

1423905896731 is a deficient number, since it is larger than the sum of its proper divisors (1).

1423905896731 is an equidigital number, since it uses as much as digits as its factorization.

1423905896731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 1423905896731 in words is "one trillion, four hundred twenty-three billion, nine hundred five million, eight hundred ninety-six thousand, seven hundred thirty-one".