312012494 has 4 divisors (see below), whose sum is σ = 468018744. Its totient is φ = 156006246.

The previous prime is 312012487. The next prime is 312012529. The reversal of 312012494 is 494210213.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78003122 + ... + 78003125.

It is an arithmetic number, because the mean of its divisors is an integer number (117004686).

Almost surely, 2^312012494 is an apocalyptic number.

312012494 is a deficient number, since it is larger than the sum of its proper divisors (156006250).

312012494 is a wasteful number, since it uses less digits than its factorization.

312012494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156006249.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 312012494 is about 17663.8753958467. The cubic root of 312012494 is about 678.2513418572.

The spelling of 312012494 in words is "three hundred twelve million, twelve thousand, four hundred ninety-four".