421440334203131 has 16 divisors (see below), whose sum is σ = 429614549049600. Its totient is φ = 413274401231328.

The previous prime is 421440334203107. The next prime is 421440334203139. The reversal of 421440334203131 is 131302433044124.

It is a cyclic number.

It is not a de Polignac number, because 421440334203131 - 2¹⁸ = 421440333940987 is a prime.

It is a super-2 number, since 2×421440334203131² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 421440334203091 and 421440334203100.

It is not an unprimeable number, because it can be changed into a prime (421440334203139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1105815650 + ... + 1106196696.

It is an arithmetic number, because the mean of its divisors is an integer number (26850909315600).

Almost surely, 2^{421440334203131} is an apocalyptic number.

421440334203131 is a deficient number, since it is larger than the sum of its proper divisors (8174214846469).

421440334203131 is a wasteful number, since it uses less digits than its factorization.

421440334203131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391858.

The product of its (nonzero) digits is 82944, while the sum is 35.

Adding to 421440334203131 its reverse (131302433044124), we get a palindrome (552742767247255).

The spelling of 421440334203131 in words is "four hundred twenty-one trillion, four hundred forty billion, three hundred thirty-four million, two hundred three thousand, one hundred thirty-one".