431217115541 has 8 divisors (see below), whose sum is σ = 431865108120. Its totient is φ = 430569520128.

The previous prime is 431217115493. The next prime is 431217115583. The reversal of 431217115541 is 145511712134.

It can be written as a sum of positive squares in 4 ways, for example, as 11988060100 + 419229055441 = 109490^2 + 647479^2 .

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-431217115541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (431217115591) 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, 2110595 + ... + 2305871.

It is an arithmetic number, because the mean of its divisors is an integer number (53983138515).

Almost surely, 2^431217115541 is an apocalyptic number.

It is an amenable number.

431217115541 is a deficient number, since it is larger than the sum of its proper divisors (647992579).

431217115541 is a wasteful number, since it uses less digits than its factorization.

431217115541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198583.

The product of its digits is 16800, while the sum is 35.

Adding to 431217115541 its reverse (145511712134), we get a palindrome (576728827675).

The spelling of 431217115541 in words is "four hundred thirty-one billion, two hundred seventeen million, one hundred fifteen thousand, five hundred forty-one".