146503131 has 4 divisors (see below), whose sum is σ = 195337512. Its totient is φ = 97668752.

The previous prime is 146503121. The next prime is 146503139. The reversal of 146503131 is 131305641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131305641 = 3 ⋅43768547.

It is a cyclic number.

It is not a de Polignac number, because 146503131 - 2²¹ = 144405979 is a prime.

It is a super-2 number, since 2×146503131² = 42926334785606322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (146503139) 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, 24417186 + ... + 24417191.

It is an arithmetic number, because the mean of its divisors is an integer number (48834378).

Almost surely, 2^146503131 is an apocalyptic number.

146503131 is a deficient number, since it is larger than the sum of its proper divisors (48834381).

146503131 is an equidigital number, since it uses as much as digits as its factorization.

146503131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48834380.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 146503131 is about 12103.8477766370. The cubic root of 146503131 is about 527.1679135884.

Adding to 146503131 its reverse (131305641), we get a palindrome (277808772).

The spelling of 146503131 in words is "one hundred forty-six million, five hundred three thousand, one hundred thirty-one".