312161133 has 16 divisors (see below), whose sum is σ = 431089920. Its totient is φ = 200687424.

The previous prime is 312161131. The next prime is 312161147. The reversal of 312161133 is 331161213.

It is not a de Polignac number, because 312161133 - 2¹ = 312161131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312161131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94335 + ... + 97587.

It is an arithmetic number, because the mean of its divisors is an integer number (26943120).

Almost surely, 2^312161133 is an apocalyptic number.

It is an amenable number.

312161133 is a deficient number, since it is larger than the sum of its proper divisors (118928787).

312161133 is a wasteful number, since it uses less digits than its factorization.

312161133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4388.

The product of its digits is 324, while the sum is 21.

The square root of 312161133 is about 17668.0823237838. The cubic root of 312161133 is about 678.3590283531.

The spelling of 312161133 in words is "three hundred twelve million, one hundred sixty-one thousand, one hundred thirty-three".