421403331011 has 8 divisors (see below), whose sum is σ = 473550231840. Its totient is φ = 372075181632.

The previous prime is 421403330981. The next prime is 421403331017. The reversal of 421403331011 is 110133304124.

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 421403331011 - 2²² = 421399136707 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421403331017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 704687546 + ... + 704688143.

It is an arithmetic number, because the mean of its divisors is an integer number (59193778980).

Almost surely, 2^421403331011 is an apocalyptic number.

421403331011 is a deficient number, since it is larger than the sum of its proper divisors (52146900829).

421403331011 is a wasteful number, since it uses less digits than its factorization.

421403331011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409375725.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 421403331011 its reverse (110133304124), we get a palindrome (531536635135).

The spelling of 421403331011 in words is "four hundred twenty-one billion, four hundred three million, three hundred thirty-one thousand, eleven".