312671536649 has 2 divisors, whose sum is σ = 312671536650. Its totient is φ = 312671536648.

The previous prime is 312671536621. The next prime is 312671536841. The reversal of 312671536649 is 946635176213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 244292947600 + 68378589049 = 494260^2 + 261493^2 .

It is a cyclic number.

It is not a de Polignac number, because 312671536649 - 2²⁴ = 312654759433 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312671536649.

It is not a weakly prime, because it can be changed into another prime (312671536349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156335768324 + 156335768325.

It is an arithmetic number, because the mean of its divisors is an integer number (156335768325).

Almost surely, 2^312671536649 is an apocalyptic number.

It is an amenable number.

312671536649 is a deficient number, since it is larger than the sum of its proper divisors (1).

312671536649 is an equidigital number, since it uses as much as digits as its factorization.

312671536649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4898880, while the sum is 53.

The spelling of 312671536649 in words is "three hundred twelve billion, six hundred seventy-one million, five hundred thirty-six thousand, six hundred forty-nine".