170742455431 has 8 divisors (see below), whose sum is σ = 171411427584. Its totient is φ = 170073770040.

The previous prime is 170742455393. The next prime is 170742455509. The reversal of 170742455431 is 134554247071.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 170742455431 - 2⁹ = 170742454919 is a prime.

It is a super-2 number, since 2×170742455431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (170742455131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162956 + ... + 1301518.

It is an arithmetic number, because the mean of its divisors is an integer number (21426428448).

Almost surely, 2^170742455431 is an apocalyptic number.

170742455431 is a deficient number, since it is larger than the sum of its proper divisors (668972153).

170742455431 is a wasteful number, since it uses less digits than its factorization.

170742455431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143381.

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 170742455431 in words is "one hundred seventy billion, seven hundred forty-two million, four hundred fifty-five thousand, four hundred thirty-one".