148031491 has 12 divisors (see below), whose sum is σ = 152311600. Its totient is φ = 143863200.

The previous prime is 148031453. The next prime is 148031503. The reversal of 148031491 is 194130841.

It is not a de Polignac number, because 148031491 - 2⁹ = 148030979 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (148031591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423985 + ... + 424333.

Almost surely, 2^148031491 is an apocalyptic number.

148031491 is a deficient number, since it is larger than the sum of its proper divisors (4280109).

148031491 is an equidigital number, since it uses as much as digits as its factorization.

148031491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606 (or 553 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 148031491 is about 12166.8192638832. The cubic root of 148031491 is about 528.9947612590.

The spelling of 148031491 in words is "one hundred forty-eight million, thirty-one thousand, four hundred ninety-one".