70123111 has 4 divisors (see below), whose sum is σ = 70318800. Its totient is φ = 69927424.

The previous prime is 70123069. The next prime is 70123117. The reversal of 70123111 is 11132107.

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

It is a cyclic number.

It is not a de Polignac number, because 70123111 - 2¹¹ = 70121063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70123117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97306 + ... + 98023.

It is an arithmetic number, because the mean of its divisors is an integer number (17579700).

Almost surely, 2^70123111 is an apocalyptic number.

70123111 is a deficient number, since it is larger than the sum of its proper divisors (195689).

70123111 is a wasteful number, since it uses less digits than its factorization.

70123111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195688.

The product of its (nonzero) digits is 42, while the sum is 16.

The square root of 70123111 is about 8373.9543227797. The cubic root of 70123111 is about 412.3699958854.

Adding to 70123111 its reverse (11132107), we get a palindrome (81255218).

The spelling of 70123111 in words is "seventy million, one hundred twenty-three thousand, one hundred eleven".