431401121021 has 8 divisors (see below), whose sum is σ = 489037708320. Its totient is φ = 377257660272.

The previous prime is 431401120999. The next prime is 431401121051. The reversal of 431401121021 is 120121104134.

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 431401121021 - 2²² = 431396926717 is a prime.

It is a super-2 number, since 2×431401121021² (a number of 24 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 = 431401120984 and 431401121002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431401121051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 873281375 + ... + 873281868.

It is an arithmetic number, because the mean of its divisors is an integer number (61129713540).

Almost surely, 2^431401121021 is an apocalyptic number.

It is an amenable number.

431401121021 is a deficient number, since it is larger than the sum of its proper divisors (57636587299).

431401121021 is a wasteful number, since it uses less digits than its factorization.

431401121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746563275.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 431401121021 its reverse (120121104134), we get a palindrome (551522225155).

The spelling of 431401121021 in words is "four hundred thirty-one billion, four hundred one million, one hundred twenty-one thousand, twenty-one".