171439052631 has 32 divisors (see below), whose sum is σ = 285465600000. Its totient is φ = 88910496480.

The previous prime is 171439052569. The next prime is 171439052641. The reversal of 171439052631 is 136250934171.

It is not a de Polignac number, because 171439052631 - 2²⁶ = 171371943767 is a prime.

It is a super-2 number, since 2×171439052631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171439052641) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481131 + ... + 757868.

It is an arithmetic number, because the mean of its divisors is an integer number (8920800000).

Almost surely, 2^171439052631 is an apocalyptic number.

171439052631 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

171439052631 is a deficient number, since it is larger than the sum of its proper divisors (114026547369).

171439052631 is a wasteful number, since it uses less digits than its factorization.

171439052631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239619.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 171439052631 in words is "one hundred seventy-one billion, four hundred thirty-nine million, fifty-two thousand, six hundred thirty-one".