106512431 has 4 divisors (see below), whose sum is σ = 107290032. Its totient is φ = 105734832.

The previous prime is 106512409. The next prime is 106512437. The reversal of 106512431 is 134215601.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106512431 is a prime.

It is a super-2 number, since 2×106512431² = 22689795915059522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 106512397 and 106512406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106512437) 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, 388595 + ... + 388868.

It is an arithmetic number, because the mean of its divisors is an integer number (26822508).

Almost surely, 2^106512431 is an apocalyptic number.

106512431 is a deficient number, since it is larger than the sum of its proper divisors (777601).

106512431 is an equidigital number, since it uses as much as digits as its factorization.

106512431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777600.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 106512431 is about 10320.4859866190. The cubic root of 106512431 is about 474.0237470819.

The spelling of 106512431 in words is "one hundred six million, five hundred twelve thousand, four hundred thirty-one".