13431420441 has 24 divisors (see below), whose sum is σ = 20496977280. Its totient is φ = 8461557216.

The previous prime is 13431420421. The next prime is 13431420467. The reversal of 13431420441 is 14402413431.

It is not a de Polignac number, because 13431420441 - 2¹³ = 13431412249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13431420421) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 535195 + ... + 559728.

It is an arithmetic number, because the mean of its divisors is an integer number (854040720).

Almost surely, 2^13431420441 is an apocalyptic number.

It is an amenable number.

13431420441 is a deficient number, since it is larger than the sum of its proper divisors (7065556839).

13431420441 is a wasteful number, since it uses less digits than its factorization.

13431420441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095005 (or 1095002 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13431420441 its reverse (14402413431), we get a palindrome (27833833872).

The spelling of 13431420441 in words is "thirteen billion, four hundred thirty-one million, four hundred twenty thousand, four hundred forty-one".