513123371 has 2 divisors, whose sum is σ = 513123372. Its totient is φ = 513123370.

The previous prime is 513123341. The next prime is 513123379. The reversal of 513123371 is 173321315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 513123371 - 2²² = 508929067 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513123371.

It is not a weakly prime, because it can be changed into another prime (513123379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256561685 + 256561686.

It is an arithmetic number, because the mean of its divisors is an integer number (256561686).

Almost surely, 2^513123371 is an apocalyptic number.

513123371 is a deficient number, since it is larger than the sum of its proper divisors (1).

513123371 is an equidigital number, since it uses as much as digits as its factorization.

513123371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 26.

The square root of 513123371 is about 22652.2266234470. The cubic root of 513123371 is about 800.5846616718.

Adding to 513123371 its reverse (173321315), we get a palindrome (686444686).

The spelling of 513123371 in words is "five hundred thirteen million, one hundred twenty-three thousand, three hundred seventy-one".