312161357 has 8 divisors (see below), whose sum is σ = 319078656. Its totient is φ = 305255632.

The previous prime is 312161347. The next prime is 312161371. The reversal of 312161357 is 753161213.

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 312161357 - 2¹⁰ = 312160333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312161347) 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, 73463 + ... + 77595.

It is an arithmetic number, because the mean of its divisors is an integer number (39884832).

Almost surely, 2^312161357 is an apocalyptic number.

It is an amenable number.

312161357 is a deficient number, since it is larger than the sum of its proper divisors (6917299).

312161357 is a wasteful number, since it uses less digits than its factorization.

312161357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5787.

The product of its digits is 3780, while the sum is 29.

The square root of 312161357 is about 17668.0886628973. The cubic root of 312161357 is about 678.3591906116.

The spelling of 312161357 in words is "three hundred twelve million, one hundred sixty-one thousand, three hundred fifty-seven".