312140513 has 2 divisors, whose sum is σ = 312140514. Its totient is φ = 312140512.

The previous prime is 312140501. The next prime is 312140551. The reversal of 312140513 is 315041213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239413729 + 72726784 = 15473^2 + 8528^2 .

It is a cyclic number.

It is not a de Polignac number, because 312140513 - 2⁶ = 312140449 is a prime.

It is not a weakly prime, because it can be changed into another prime (312140713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156070256 + 156070257.

It is an arithmetic number, because the mean of its divisors is an integer number (156070257).

Almost surely, 2^312140513 is an apocalyptic number.

It is an amenable number.

312140513 is a deficient number, since it is larger than the sum of its proper divisors (1).

312140513 is an equidigital number, since it uses as much as digits as its factorization.

312140513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 312140513 is about 17667.4987760011. The cubic root of 312140513 is about 678.3440915467.

Adding to 312140513 its reverse (315041213), we get a palindrome (627181726).

It can be divided in two parts, 3121 and 40513, that added together give a palindrome (43634).

The spelling of 312140513 in words is "three hundred twelve million, one hundred forty thousand, five hundred thirteen".