146288831 has 4 divisors (see below), whose sum is σ = 157541832. Its totient is φ = 135035832.

The previous prime is 146288777. The next prime is 146288833. The reversal of 146288831 is 138882641.

146288831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 146288831 - 2⁶ = 146288767 is a prime.

It is a super-2 number, since 2×146288831² = 42800844150693122, 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 (146288833) 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, 5626481 + ... + 5626506.

It is an arithmetic number, because the mean of its divisors is an integer number (39385458).

Almost surely, 2^146288831 is an apocalyptic number.

146288831 is a deficient number, since it is larger than the sum of its proper divisors (11253001).

146288831 is a wasteful number, since it uses less digits than its factorization.

146288831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11253000.

The product of its digits is 73728, while the sum is 41.

The square root of 146288831 is about 12094.9919801544. The cubic root of 146288831 is about 526.9107468146.

The spelling of 146288831 in words is "one hundred forty-six million, two hundred eighty-eight thousand, eight hundred thirty-one".