106731290 has 8 divisors (see below), whose sum is σ = 192116340. Its totient is φ = 42692512.

The previous prime is 106731239. The next prime is 106731299. The reversal of 106731290 is 92137601.

It can be written as a sum of positive squares in 2 ways, for example, as 106357969 + 373321 = 10313^2 + 611^2 .

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

It is a super-2 number, since 2×106731290² = 22783136530128200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106731299) 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, 5336555 + ... + 5336574.

Almost surely, 2^106731290 is an apocalyptic number.

106731290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

106731290 is a deficient number, since it is larger than the sum of its proper divisors (85385050).

106731290 is a wasteful number, since it uses less digits than its factorization.

106731290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10673136.

The product of its (nonzero) digits is 2268, while the sum is 29.

The square root of 106731290 is about 10331.0836798470. The cubic root of 106731290 is about 474.3481955561.

Adding to 106731290 its reverse (92137601), we get a palindrome (198868891).

The spelling of 106731290 in words is "one hundred six million, seven hundred thirty-one thousand, two hundred ninety".