731141211421 has 8 divisors (see below), whose sum is σ = 735842467800. Its totient is φ = 726445415232.

The previous prime is 731141211371. The next prime is 731141211461. The reversal of 731141211421 is 124112141137.

731141211421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 310477412025 + 420663799396 = 557205^2 + 648586^2 .

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 731141211421 - 2⁷ = 731141211293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 731141211421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731141211461) 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, 1096210 + ... + 1632163.

It is an arithmetic number, because the mean of its divisors is an integer number (91980308475).

Almost surely, 2^731141211421 is an apocalyptic number.

It is an amenable number.

731141211421 is a deficient number, since it is larger than the sum of its proper divisors (4701256379).

731141211421 is a wasteful number, since it uses less digits than its factorization.

731141211421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2730095.

The product of its digits is 1344, while the sum is 28.

Adding to 731141211421 its reverse (124112141137), we get a palindrome (855253352558).

The spelling of 731141211421 in words is "seven hundred thirty-one billion, one hundred forty-one million, two hundred eleven thousand, four hundred twenty-one".