1231405122435 has 32 divisors (see below), whose sum is σ = 2041042544640. Its totient is φ = 633302073600.

The previous prime is 1231405122421. The next prime is 1231405122457. The reversal of 1231405122435 is 5342215041321.

It is not a de Polignac number, because 1231405122435 - 2⁹ = 1231405121923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1231405122396 and 1231405122405.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4581405 + ... + 4842734.

It is an arithmetic number, because the mean of its divisors is an integer number (63782579520).

Almost surely, 2^{1231405122435} is an apocalyptic number.

1231405122435 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231405122435 is a deficient number, since it is larger than the sum of its proper divisors (809637422205).

1231405122435 is a wasteful number, since it uses less digits than its factorization.

1231405122435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9424459.

The product of its (nonzero) digits is 28800, while the sum is 33.

The spelling of 1231405122435 in words is "one trillion, two hundred thirty-one billion, four hundred five million, one hundred twenty-two thousand, four hundred thirty-five".