513031229 has 2 divisors, whose sum is σ = 513031230. Its totient is φ = 513031228.

The previous prime is 513031223. The next prime is 513031231. The reversal of 513031229 is 922130315.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272316004 + 240715225 = 16502^2 + 15515^2 .

It is a cyclic number.

It is not a de Polignac number, because 513031229 - 2¹² = 513027133 is a prime.

Together with 513031231, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 513031198 and 513031207.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (513031223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256515614 + 256515615.

It is an arithmetic number, because the mean of its divisors is an integer number (256515615).

Almost surely, 2^513031229 is an apocalyptic number.

It is an amenable number.

513031229 is a deficient number, since it is larger than the sum of its proper divisors (1).

513031229 is an equidigital number, since it uses as much as digits as its factorization.

513031229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 513031229 is about 22650.1926923371. The cubic root of 513031229 is about 800.5367382470.

The spelling of 513031229 in words is "five hundred thirteen million, thirty-one thousand, two hundred twenty-nine".