630690311 has 2 divisors, whose sum is σ = 630690312. Its totient is φ = 630690310.

The previous prime is 630690283. The next prime is 630690317. The reversal of 630690311 is 113096036.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 630690311 - 2²² = 626496007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (630690317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315345155 + 315345156.

It is an arithmetic number, because the mean of its divisors is an integer number (315345156).

Almost surely, 2^630690311 is an apocalyptic number.

630690311 is a deficient number, since it is larger than the sum of its proper divisors (1).

630690311 is an equidigital number, since it uses as much as digits as its factorization.

630690311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 630690311 is about 25113.5483554196. The cubic root of 630690311 is about 857.5748836280.

The spelling of 630690311 in words is "six hundred thirty million, six hundred ninety thousand, three hundred eleven".