421231684831 has 16 divisors (see below), whose sum is σ = 436599400320. Its totient is φ = 406164337920.

The previous prime is 421231684807. The next prime is 421231684849. The reversal of 421231684831 is 138486132124.

It is a cyclic number.

It is not a de Polignac number, because 421231684831 - 2¹¹ = 421231682783 is a prime.

It is a super-2 number, since 2×421231684831² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421231684031) 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, 976921 + ... + 1340461.

It is an arithmetic number, because the mean of its divisors is an integer number (27287462520).

Almost surely, 2^421231684831 is an apocalyptic number.

421231684831 is a deficient number, since it is larger than the sum of its proper divisors (15367715489).

421231684831 is a wasteful number, since it uses less digits than its factorization.

421231684831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363954.

The product of its digits is 221184, while the sum is 43.

The spelling of 421231684831 in words is "four hundred twenty-one billion, two hundred thirty-one million, six hundred eighty-four thousand, eight hundred thirty-one".