115723391213 has 4 divisors (see below), whose sum is σ = 115724073948. Its totient is φ = 115722708480.

The previous prime is 115723391171. The next prime is 115723391263. The reversal of 115723391213 is 312193327511.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 73680759364 + 42042631849 = 271442^2 + 205043^2 .

It is a cyclic number.

It is not a de Polignac number, because 115723391213 - 2²⁶ = 115656282349 is a prime.

It is a super-2 number, since 2×115723391213² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115723391263) 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, 128045 + ... + 497837.

It is an arithmetic number, because the mean of its divisors is an integer number (28931018487).

Almost surely, 2^115723391213 is an apocalyptic number.

It is an amenable number.

115723391213 is a deficient number, since it is larger than the sum of its proper divisors (682735).

115723391213 is an equidigital number, since it uses as much as digits as its factorization.

115723391213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682734.

The product of its digits is 34020, while the sum is 38.

The spelling of 115723391213 in words is "one hundred fifteen billion, seven hundred twenty-three million, three hundred ninety-one thousand, two hundred thirteen".