1231405440554 has 8 divisors (see below), whose sum is σ = 1867862185380. Its totient is φ = 608784712096.

The previous prime is 1231405440547. The next prime is 1231405440571. The reversal of 1231405440554 is 4550445041321.

It can be written as a sum of positive squares in 2 ways, for example, as 1174915084225 + 56490356329 = 1083935^2 + 237677^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3459003869 + ... + 3459004224.

Almost surely, 2^{1231405440554} is an apocalyptic number.

1231405440554 is a deficient number, since it is larger than the sum of its proper divisors (636456744826).

1231405440554 is an equidigital number, since it uses as much as digits as its factorization.

1231405440554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6918008184.

The product of its (nonzero) digits is 192000, while the sum is 38.

The spelling of 1231405440554 in words is "one trillion, two hundred thirty-one billion, four hundred five million, four hundred forty thousand, five hundred fifty-four".