148312021 has 16 divisors (see below), whose sum is σ = 178956288. Its totient is φ = 121089600.

The previous prime is 148312019. The next prime is 148312037. The reversal of 148312021 is 120213841.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 148312021 - 2¹ = 148312019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 148311983 and 148312001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (148312001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8725 + ... + 19306.

It is an arithmetic number, because the mean of its divisors is an integer number (11184768).

Almost surely, 2^148312021 is an apocalyptic number.

148312021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

148312021 is a deficient number, since it is larger than the sum of its proper divisors (30644267).

148312021 is a wasteful number, since it uses less digits than its factorization.

148312021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28092.

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 148312021 is about 12178.3422927753. The cubic root of 148312021 is about 529.3287110509.

Adding to 148312021 its reverse (120213841), we get a palindrome (268525862).

The spelling of 148312021 in words is "one hundred forty-eight million, three hundred twelve thousand, twenty-one".