312051579989 has 2 divisors, whose sum is σ = 312051579990. Its totient is φ = 312051579988.

The previous prime is 312051579929. The next prime is 312051580003. The reversal of 312051579989 is 989975150213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226735011889 + 85316568100 = 476167^2 + 292090^2 .

It is a cyclic number.

It is not a de Polignac number, because 312051579989 - 2⁸ = 312051579733 is a prime.

It is a super-3 number, since 3×312051579989³ (a number of 35 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312051579929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156025789994 + 156025789995.

It is an arithmetic number, because the mean of its divisors is an integer number (156025789995).

Almost surely, 2^312051579989 is an apocalyptic number.

It is an amenable number.

312051579989 is a deficient number, since it is larger than the sum of its proper divisors (1).

312051579989 is an equidigital number, since it uses as much as digits as its factorization.

312051579989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6123600, while the sum is 59.

The spelling of 312051579989 in words is "three hundred twelve billion, fifty-one million, five hundred seventy-nine thousand, nine hundred eighty-nine".