170051320431 has 8 divisors (see below), whose sum is σ = 251927882160. Its totient is φ = 113367546936.

The previous prime is 170051320429. The next prime is 170051320451. The reversal of 170051320431 is 134023150071.

It is not a de Polignac number, because 170051320431 - 2¹ = 170051320429 is a prime.

It is a super-2 number, since 2×170051320431² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 6298197053 = 170051320431 / (1 + 7 + 0 + 0 + 5 + 1 + 3 + 2 + 0 + 4 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 170051320395 and 170051320404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170051320451) 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, 3149098500 + ... + 3149098553.

It is an arithmetic number, because the mean of its divisors is an integer number (31490985270).

Almost surely, 2^170051320431 is an apocalyptic number.

170051320431 is a deficient number, since it is larger than the sum of its proper divisors (81876561729).

170051320431 is an equidigital number, since it uses as much as digits as its factorization.

170051320431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6298197062 (or 6298197056 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The spelling of 170051320431 in words is "one hundred seventy billion, fifty-one million, three hundred twenty thousand, four hundred thirty-one".