1231423510441 has 4 divisors (see below), whose sum is σ = 1231583380992. Its totient is φ = 1231263639892.

The previous prime is 1231423510399. The next prime is 1231423510477. The reversal of 1231423510441 is 1440153241321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1231423510441 - 2⁹ = 1231423509929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231423510741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79923721 + ... + 79939126.

It is an arithmetic number, because the mean of its divisors is an integer number (307895845248).

Almost surely, 2^{1231423510441} is an apocalyptic number.

It is an amenable number.

1231423510441 is a deficient number, since it is larger than the sum of its proper divisors (159870551).

1231423510441 is an equidigital number, since it uses as much as digits as its factorization.

1231423510441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159870550.

The product of its (nonzero) digits is 11520, while the sum is 31.

Adding to 1231423510441 its reverse (1440153241321), we get a palindrome (2671576751762).

The spelling of 1231423510441 in words is "one trillion, two hundred thirty-one billion, four hundred twenty-three million, five hundred ten thousand, four hundred forty-one".