312140722 has 4 divisors (see below), whose sum is σ = 468211086. Its totient is φ = 156070360.

The previous prime is 312140713. The next prime is 312140743. The reversal of 312140722 is 227041213.

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., 303491241 + 8649481 = 17421^2 + 2941^2 .

It is a junction number, because it is equal to n+sod(n) for n = 312140693 and 312140702.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78035179 + ... + 78035182.

Almost surely, 2^312140722 is an apocalyptic number.

312140722 is a deficient number, since it is larger than the sum of its proper divisors (156070364).

312140722 is a wasteful number, since it uses less digits than its factorization.

312140722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156070363.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 312140722 is about 17667.5046908158. The cubic root of 312140722 is about 678.3442429464.

Adding to 312140722 its reverse (227041213), we get a palindrome (539181935).

The spelling of 312140722 in words is "three hundred twelve million, one hundred forty thousand, seven hundred twenty-two".