13431004387 has 2 divisors, whose sum is σ = 13431004388. Its totient is φ = 13431004386.

The previous prime is 13431004273. The next prime is 13431004421. The reversal of 13431004387 is 78340013431.

It is an a-pointer prime, because the next prime (13431004421) can be obtained adding 13431004387 to its sum of digits (34).

It is a strong prime.

It is an emirp because it is prime and its reverse (78340013431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13431004387 - 2²³ = 13422615779 is a prime.

It is a super-2 number, since 2×13431004387² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13431004187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6715502193 + 6715502194.

It is an arithmetic number, because the mean of its divisors is an integer number (6715502194).

Almost surely, 2^13431004387 is an apocalyptic number.

13431004387 is a deficient number, since it is larger than the sum of its proper divisors (1).

13431004387 is an equidigital number, since it uses as much as digits as its factorization.

13431004387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 13431004387 in words is "thirteen billion, four hundred thirty-one million, four thousand, three hundred eighty-seven".