17031574421 has 2 divisors, whose sum is σ = 17031574422. Its totient is φ = 17031574420.

The previous prime is 17031574403. The next prime is 17031574429. The reversal of 17031574421 is 12447513071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11549800900 + 5481773521 = 107470^2 + 74039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17031574421 is a prime.

It is a super-2 number, since 2×17031574421² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17031574429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8515787210 + 8515787211.

It is an arithmetic number, because the mean of its divisors is an integer number (8515787211).

Almost surely, 2^17031574421 is an apocalyptic number.

It is an amenable number.

17031574421 is a deficient number, since it is larger than the sum of its proper divisors (1).

17031574421 is an equidigital number, since it uses as much as digits as its factorization.

17031574421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23520, while the sum is 35.

The spelling of 17031574421 in words is "seventeen billion, thirty-one million, five hundred seventy-four thousand, four hundred twenty-one".