312429339946 has 4 divisors (see below), whose sum is σ = 468644009922. Its totient is φ = 156214669972.

The previous prime is 312429339931. The next prime is 312429339979. The reversal of 312429339946 is 649933924213.

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., 251190413721 + 61238926225 = 501189^2 + 247465^2 .

It is a super-2 number, since 2×312429339946² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78107334985 + ... + 78107334988.

Almost surely, 2^312429339946 is an apocalyptic number.

312429339946 is a deficient number, since it is larger than the sum of its proper divisors (156214669976).

312429339946 is a wasteful number, since it uses less digits than its factorization.

312429339946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156214669975.

The product of its digits is 7558272, while the sum is 55.

The spelling of 312429339946 in words is "three hundred twelve billion, four hundred twenty-nine million, three hundred thirty-nine thousand, nine hundred forty-six".