146290831 has 12 divisors (see below), whose sum is σ = 156513168. Its totient is φ = 136258112.

The previous prime is 146290801. The next prime is 146290843. The reversal of 146290831 is 138092641.

It is not a de Polignac number, because 146290831 - 2⁵ = 146290799 is a prime.

It is a super-2 number, since 2×146290831² = 42802014469341122, 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 (146290801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 644340 + ... + 644566.

It is an arithmetic number, because the mean of its divisors is an integer number (13042764).

Almost surely, 2^146290831 is an apocalyptic number.

146290831 is a deficient number, since it is larger than the sum of its proper divisors (10222337).

146290831 is an equidigital number, since it uses as much as digits as its factorization.

146290831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 146290831 is about 12095.0746587196. The cubic root of 146290831 is about 526.9131480385.

The spelling of 146290831 in words is "one hundred forty-six million, two hundred ninety thousand, eight hundred thirty-one".