1231401451723 has 2 divisors, whose sum is σ = 1231401451724. Its totient is φ = 1231401451722.

The previous prime is 1231401451717. The next prime is 1231401451769. The reversal of 1231401451723 is 3271541041321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1231401451723 - 2⁵ = 1231401451691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1231401451703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 615700725861 + 615700725862.

It is an arithmetic number, because the mean of its divisors is an integer number (615700725862).

Almost surely, 2^{1231401451723} is an apocalyptic number.

1231401451723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1231401451723 is an equidigital number, since it uses as much as digits as its factorization.

1231401451723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 1231401451723 in words is "one trillion, two hundred thirty-one billion, four hundred one million, four hundred fifty-one thousand, seven hundred twenty-three".