70013123 has 4 divisors (see below), whose sum is σ = 74131560. Its totient is φ = 65894688.

The previous prime is 70013101. The next prime is 70013137. The reversal of 70013123 is 32131007.

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 70013123 - 2¹⁴ = 69996739 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 4118419 = 70013123 / (7 + 0 + 0 + 1 + 3 + 1 + 2 + 3).

It is not an unprimeable number, because it can be changed into a prime (70013183) 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, 2059193 + ... + 2059226.

It is an arithmetic number, because the mean of its divisors is an integer number (18532890).

Almost surely, 2^70013123 is an apocalyptic number.

70013123 is a deficient number, since it is larger than the sum of its proper divisors (4118437).

70013123 is a wasteful number, since it uses less digits than its factorization.

70013123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118436.

The product of its (nonzero) digits is 126, while the sum is 17.

The square root of 70013123 is about 8367.3844778401. The cubic root of 70013123 is about 412.1542824797.

The spelling of 70013123 in words is "seventy million, thirteen thousand, one hundred twenty-three".