312400034 has 4 divisors (see below), whose sum is σ = 468600054. Its totient is φ = 156200016.

The previous prime is 312400019. The next prime is 312400037. The reversal of 312400034 is 430004213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 260919409 + 51480625 = 16153^2 + 7175^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 312399985 and 312400021.

It is not an unprimeable number, because it can be changed into a prime (312400037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78100007 + ... + 78100010.

Almost surely, 2^312400034 is an apocalyptic number.

312400034 is a deficient number, since it is larger than the sum of its proper divisors (156200020).

312400034 is a wasteful number, since it uses less digits than its factorization.

312400034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156200019.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 312400034 is about 17674.8418380477. The cubic root of 312400034 is about 678.5320365725.

Adding to 312400034 its reverse (430004213), we get a palindrome (742404247).

The spelling of 312400034 in words is "three hundred twelve million, four hundred thousand, thirty-four".