431221301491 has 8 divisors (see below), whose sum is σ = 434855210240. Its totient is φ = 427599446472.

The previous prime is 431221301389. The next prime is 431221301509. The reversal of 431221301491 is 194103122134.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-431221301491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (431221901491) 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, 2941575 + ... + 3084688.

It is an arithmetic number, because the mean of its divisors is an integer number (54356901280).

Almost surely, 2^431221301491 is an apocalyptic number.

431221301491 is a deficient number, since it is larger than the sum of its proper divisors (3633908749).

431221301491 is a wasteful number, since it uses less digits than its factorization.

431221301491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6026865.

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 431221301491 in words is "four hundred thirty-one billion, two hundred twenty-one million, three hundred one thousand, four hundred ninety-one".