1231923547427 has 8 divisors (see below), whose sum is σ = 1235899282464. Its totient is φ = 1227948067008.

The previous prime is 1231923547423. The next prime is 1231923547433. The reversal of 1231923547427 is 7247453291321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1231923547427 - 2² = 1231923547423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231923547423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16769258 + ... + 16842560.

It is an arithmetic number, because the mean of its divisors is an integer number (154487410308).

Almost surely, 2^{1231923547427} is an apocalyptic number.

1231923547427 is a deficient number, since it is larger than the sum of its proper divisors (3975735037).

1231923547427 is an equidigital number, since it uses as much as digits as its factorization.

1231923547427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127309.

The product of its digits is 2540160, while the sum is 50.

The spelling of 1231923547427 in words is "one trillion, two hundred thirty-one billion, nine hundred twenty-three million, five hundred forty-seven thousand, four hundred twenty-seven".