312123434 has 24 divisors (see below), whose sum is σ = 576663300. Its totient is φ = 125897856.

The previous prime is 312123421. The next prime is 312123463. The reversal of 312123434 is 434321213.

It can be written as a sum of positive squares in 2 ways, for example, as 275460409 + 36663025 = 16597^2 + 6055^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 92009 + ... + 95340.

Almost surely, 2^312123434 is an apocalyptic number.

312123434 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

312123434 is a deficient number, since it is larger than the sum of its proper divisors (264539866).

312123434 is a wasteful number, since it uses less digits than its factorization.

312123434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187382 (or 187375 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 312123434 is about 17667.0154242305. The cubic root of 312123434 is about 678.3317192875.

Adding to 312123434 its reverse (434321213), we get a palindrome (746444647).

The spelling of 312123434 in words is "three hundred twelve million, one hundred twenty-three thousand, four hundred thirty-four".