106831947 has 4 divisors (see below), whose sum is σ = 142442600. Its totient is φ = 71221296.

The previous prime is 106831943. The next prime is 106831981. The reversal of 106831947 is 749138601.

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

It is not a de Polignac number, because 106831947 - 2² = 106831943 is a prime.

It is a super-2 number, since 2×106831947² = 22826129799621618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106831943) 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, 17805322 + ... + 17805327.

It is an arithmetic number, because the mean of its divisors is an integer number (35610650).

Almost surely, 2^106831947 is an apocalyptic number.

106831947 is a deficient number, since it is larger than the sum of its proper divisors (35610653).

106831947 is an equidigital number, since it uses as much as digits as its factorization.

106831947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35610652.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 106831947 is about 10335.9540923903. The cubic root of 106831947 is about 474.4972660692.

The spelling of 106831947 in words is "one hundred six million, eight hundred thirty-one thousand, nine hundred forty-seven".