131415166 has 4 divisors (see below), whose sum is σ = 197122752. Its totient is φ = 65707582.

The previous prime is 131415121. The next prime is 131415199. The reversal of 131415166 is 661514131.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32853790 + ... + 32853793.

It is an arithmetic number, because the mean of its divisors is an integer number (49280688).

Almost surely, 2^131415166 is an apocalyptic number.

131415166 is a deficient number, since it is larger than the sum of its proper divisors (65707586).

131415166 is an equidigital number, since it uses as much as digits as its factorization.

131415166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65707585.

The product of its digits is 2160, while the sum is 28.

The square root of 131415166 is about 11463.6454062397. The cubic root of 131415166 is about 508.4112625367.

Adding to 131415166 its reverse (661514131), we get a palindrome (792929297).

The spelling of 131415166 in words is "one hundred thirty-one million, four hundred fifteen thousand, one hundred sixty-six".