312249797 has 8 divisors (see below), whose sum is σ = 314496000. Its totient is φ = 310009680.

The previous prime is 312249787. The next prime is 312249799. The reversal of 312249797 is 797942213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 312249797 - 2¹⁶ = 312184261 is a prime.

It is a super-3 number, since 3×312249797³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312249799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 155204 + ... + 157202.

It is an arithmetic number, because the mean of its divisors is an integer number (39312000).

Almost surely, 2^312249797 is an apocalyptic number.

It is an amenable number.

312249797 is a deficient number, since it is larger than the sum of its proper divisors (2246203).

312249797 is a wasteful number, since it uses less digits than its factorization.

312249797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3043.

The product of its digits is 190512, while the sum is 44.

The square root of 312249797 is about 17670.5913030662. The cubic root of 312249797 is about 678.4232476776.

The spelling of 312249797 in words is "three hundred twelve million, two hundred forty-nine thousand, seven hundred ninety-seven".