171690938331 has 8 divisors (see below), whose sum is σ = 249732273984. Its totient is φ = 104055114120.

The previous prime is 171690938323. The next prime is 171690938339. The reversal of 171690938331 is 133839096171.

It is an interprime number because it is at equal distance from previous prime (171690938323) and next prime (171690938339).

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

It is not a de Polignac number, because 171690938331 - 2³ = 171690938323 is a prime.

It is a super-2 number, since 2×171690938331² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (171690938339) 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, 2601377821 + ... + 2601377886.

It is an arithmetic number, because the mean of its divisors is an integer number (31216534248).

Almost surely, 2^171690938331 is an apocalyptic number.

171690938331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

171690938331 is a deficient number, since it is larger than the sum of its proper divisors (78041335653).

171690938331 is a wasteful number, since it uses less digits than its factorization.

171690938331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5202755721.

The product of its (nonzero) digits is 734832, while the sum is 51.

The spelling of 171690938331 in words is "one hundred seventy-one billion, six hundred ninety million, nine hundred thirty-eight thousand, three hundred thirty-one".