148313721 has 8 divisors (see below), whose sum is σ = 198048160. Its totient is φ = 98727552.

The previous prime is 148313719. The next prime is 148313741. The reversal of 148313721 is 127313841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 148313721 - 2¹ = 148313719 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148313701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34711 + ... + 38748.

It is an arithmetic number, because the mean of its divisors is an integer number (24756020).

Almost surely, 2^148313721 is an apocalyptic number.

It is an amenable number.

148313721 is a deficient number, since it is larger than the sum of its proper divisors (49734439).

148313721 is an equidigital number, since it uses as much as digits as its factorization.

148313721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74135.

The product of its digits is 4032, while the sum is 30.

The square root of 148313721 is about 12178.4120886099. The cubic root of 148313721 is about 529.3307334884.

The spelling of 148313721 in words is "one hundred forty-eight million, three hundred thirteen thousand, seven hundred twenty-one".