609021131 has 2 divisors, whose sum is σ = 609021132. Its totient is φ = 609021130.

The previous prime is 609021053. The next prime is 609021139. The reversal of 609021131 is 131120906.

It is a happy number.

609021131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-609021131 is a prime.

It is a super-2 number, since 2×609021131² = 741813476009038322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 609021097 and 609021106.

It is not a weakly prime, because it can be changed into another prime (609021139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 304510565 + 304510566.

It is an arithmetic number, because the mean of its divisors is an integer number (304510566).

Almost surely, 2^609021131 is an apocalyptic number.

609021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

609021131 is an equidigital number, since it uses as much as digits as its factorization.

609021131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 609021131 is about 24678.3534904580. The cubic root of 609021131 is about 847.6387203133.

The spelling of 609021131 in words is "six hundred nine million, twenty-one thousand, one hundred thirty-one".