19431413 has 2 divisors, whose sum is σ = 19431414. Its totient is φ = 19431412.

The previous prime is 19431409. The next prime is 19431437. The reversal of 19431413 is 31413491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13965169 + 5466244 = 3737^2 + 2338^2 .

It is a cyclic number.

It is not a de Polignac number, because 19431413 - 2² = 19431409 is a prime.

It is a super-2 number, since 2×19431413² = 755159622353138, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19431613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9715706 + 9715707.

It is an arithmetic number, because the mean of its divisors is an integer number (9715707).

Almost surely, 2^19431413 is an apocalyptic number.

It is an amenable number.

19431413 is a deficient number, since it is larger than the sum of its proper divisors (1).

19431413 is an equidigital number, since it uses as much as digits as its factorization.

19431413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 26.

The square root of 19431413 is about 4408.1076438762. The cubic root of 19431413 is about 268.8446886103.

The spelling of 19431413 in words is "nineteen million, four hundred thirty-one thousand, four hundred thirteen".