168431630 has 8 divisors (see below), whose sum is σ = 303176952. Its totient is φ = 67372648.

The previous prime is 168431621. The next prime is 168431633. The reversal of 168431630 is 36134861.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168431633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8421572 + ... + 8421591.

It is an arithmetic number, because the mean of its divisors is an integer number (37897119).

Almost surely, 2^168431630 is an apocalyptic number.

168431630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

168431630 is a deficient number, since it is larger than the sum of its proper divisors (134745322).

168431630 is a wasteful number, since it uses less digits than its factorization.

168431630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16843170.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 168431630 is about 12978.1212045504. The cubic root of 168431630 is about 552.2569845042.

The spelling of 168431630 in words is "one hundred sixty-eight million, four hundred thirty-one thousand, six hundred thirty".