7131013123 has 4 divisors (see below), whose sum is σ = 7679552608. Its totient is φ = 6582473640.

The previous prime is 7131013121. The next prime is 7131013129. The reversal of 7131013123 is 3213101317.

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 7131013123 - 2¹ = 7131013121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7131013094 and 7131013103.

It is not an unprimeable number, because it can be changed into a prime (7131013121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274269723 + ... + 274269748.

It is an arithmetic number, because the mean of its divisors is an integer number (1919888152).

Almost surely, 2^7131013123 is an apocalyptic number.

7131013123 is a deficient number, since it is larger than the sum of its proper divisors (548539485).

7131013123 is a wasteful number, since it uses less digits than its factorization.

7131013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548539484.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 7131013123 is about 84445.3262353814. The cubic root of 7131013123 is about 1924.7917353144.

The spelling of 7131013123 in words is "seven billion, one hundred thirty-one million, thirteen thousand, one hundred twenty-three".