146648431 has 4 divisors (see below), whose sum is σ = 150225264. Its totient is φ = 143071600.

The previous prime is 146648419. The next prime is 146648497. The reversal of 146648431 is 134846641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134846641 = 953 ⋅141497.

It is a cyclic number.

It is not a de Polignac number, because 146648431 - 2⁷ = 146648303 is a prime.

It is a super-2 number, since 2×146648431² = 43011524629523522, which 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 (146648401) 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, 1788355 + ... + 1788436.

It is an arithmetic number, because the mean of its divisors is an integer number (37556316).

Almost surely, 2^146648431 is an apocalyptic number.

146648431 is a deficient number, since it is larger than the sum of its proper divisors (3576833).

146648431 is an equidigital number, since it uses as much as digits as its factorization.

146648431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576832.

The product of its digits is 55296, while the sum is 37.

The square root of 146648431 is about 12109.8485126776. The cubic root of 146648431 is about 527.3421355509.

The spelling of 146648431 in words is "one hundred forty-six million, six hundred forty-eight thousand, four hundred thirty-one".