146530931 has 2 divisors, whose sum is σ = 146530932. Its totient is φ = 146530930.

The previous prime is 146530919. The next prime is 146530933. The reversal of 146530931 is 139035641.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-146530931 is a prime.

It is a super-2 number, since 2×146530931² = 42942627479453522, which contains 22 as substring.

Together with 146530933, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (146530933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73265465 + 73265466.

It is an arithmetic number, because the mean of its divisors is an integer number (73265466).

Almost surely, 2^146530931 is an apocalyptic number.

146530931 is a deficient number, since it is larger than the sum of its proper divisors (1).

146530931 is an equidigital number, since it uses as much as digits as its factorization.

146530931 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 146530931 is about 12104.9961173063. The cubic root of 146530931 is about 527.2012560866.

The spelling of 146530931 in words is "one hundred forty-six million, five hundred thirty thousand, nine hundred thirty-one".