118628313 has 4 divisors (see below), whose sum is σ = 158171088. Its totient is φ = 79085540.

The previous prime is 118628311. The next prime is 118628359. The reversal of 118628313 is 313826811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 313826811 = 3 ⋅104608937.

It is a cyclic number.

It is not a de Polignac number, because 118628313 - 2¹ = 118628311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118628311) 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, 19771383 + ... + 19771388.

It is an arithmetic number, because the mean of its divisors is an integer number (39542772).

Almost surely, 2^118628313 is an apocalyptic number.

It is an amenable number.

118628313 is a deficient number, since it is larger than the sum of its proper divisors (39542775).

118628313 is an equidigital number, since it uses as much as digits as its factorization.

118628313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39542774.

The product of its digits is 6912, while the sum is 33.

The square root of 118628313 is about 10891.6625452683. The cubic root of 118628313 is about 491.3558353768.

The spelling of 118628313 in words is "one hundred eighteen million, six hundred twenty-eight thousand, three hundred thirteen".