131706667 has 16 divisors (see below), whose sum is σ = 142128000. Its totient is φ = 121605120.

The previous prime is 131706647. The next prime is 131706683. The reversal of 131706667 is 766607131.

It is a cyclic number.

It is not a de Polignac number, because 131706667 - 2¹¹ = 131704619 is a prime.

It is a super-2 number, since 2×131706667² = 34693292264497778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (131706647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377209 + ... + 377557.

It is an arithmetic number, because the mean of its divisors is an integer number (8883000).

Almost surely, 2^131706667 is an apocalyptic number.

131706667 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

131706667 is a deficient number, since it is larger than the sum of its proper divisors (10421333).

131706667 is a wasteful number, since it uses less digits than its factorization.

131706667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 131706667 is about 11476.3525128849. The cubic root of 131706667 is about 508.7868989048.

The spelling of 131706667 in words is "one hundred thirty-one million, seven hundred six thousand, six hundred sixty-seven".