420001431031023 has 32 divisors (see below), whose sum is σ = 618391207641600. Its totient is φ = 252509742979200.

The previous prime is 420001431031009. The next prime is 420001431031073. The reversal of 420001431031023 is 320130134100024.

It is a happy number.

It is not a de Polignac number, because 420001431031023 - 2¹² = 420001431026927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 420001431030984 and 420001431031002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420001431031073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1789209048 + ... + 1789443773.

It is an arithmetic number, because the mean of its divisors is an integer number (19324725238800).

Almost surely, 2^{420001431031023} is an apocalyptic number.

420001431031023 is a deficient number, since it is larger than the sum of its proper divisors (198389776610577).

420001431031023 is a wasteful number, since it uses less digits than its factorization.

420001431031023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3578652943.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 420001431031023 its reverse (320130134100024), we get a palindrome (740131565131047).

The spelling of 420001431031023 in words is "four hundred twenty trillion, one billion, four hundred thirty-one million, thirty-one thousand, twenty-three".