312630061 has 2 divisors, whose sum is σ = 312630062. Its totient is φ = 312630060.

The previous prime is 312630037. The next prime is 312630079. The reversal of 312630061 is 160036213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293436900 + 19193161 = 17130^2 + 4381^2 .

It is a cyclic number.

It is not a de Polignac number, because 312630061 - 2²¹ = 310532909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312630001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156315030 + 156315031.

It is an arithmetic number, because the mean of its divisors is an integer number (156315031).

Almost surely, 2^312630061 is an apocalyptic number.

It is an amenable number.

312630061 is a deficient number, since it is larger than the sum of its proper divisors (1).

312630061 is an equidigital number, since it uses as much as digits as its factorization.

312630061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 312630061 is about 17681.3478275837. The cubic root of 312630061 is about 678.6985350562.

Adding to 312630061 its reverse (160036213), we get a palindrome (472666274).

The spelling of 312630061 in words is "three hundred twelve million, six hundred thirty thousand, sixty-one".