312136423 has 2 divisors, whose sum is σ = 312136424. Its totient is φ = 312136422.

The previous prime is 312136411. The next prime is 312136459. The reversal of 312136423 is 324631213.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312136423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312134423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156068211 + 156068212.

It is an arithmetic number, because the mean of its divisors is an integer number (156068212).

Almost surely, 2^312136423 is an apocalyptic number.

312136423 is a deficient number, since it is larger than the sum of its proper divisors (1).

312136423 is an equidigital number, since it uses as much as digits as its factorization.

312136423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 25.

The square root of 312136423 is about 17667.3830263568. The cubic root of 312136423 is about 678.3411287364.

Adding to 312136423 its reverse (324631213), we get a palindrome (636767636).

It can be divided in two parts, 31213 and 6423, that added together give a square (37636 = 194²).

The spelling of 312136423 in words is "three hundred twelve million, one hundred thirty-six thousand, four hundred twenty-three".