312132145 has 32 divisors (see below), whose sum is σ = 410659200. Its totient is φ = 226381824.

The previous prime is 312132143. The next prime is 312132151. The reversal of 312132145 is 541231213.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 312132145 - 2¹ = 312132143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (312132143) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1617169 + ... + 1617361.

It is an arithmetic number, because the mean of its divisors is an integer number (12833100).

Almost surely, 2^312132145 is an apocalyptic number.

It is an amenable number.

312132145 is a deficient number, since it is larger than the sum of its proper divisors (98527055).

312132145 is a wasteful number, since it uses less digits than its factorization.

312132145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529.

The product of its digits is 720, while the sum is 22.

The square root of 312132145 is about 17667.2619553795. The cubic root of 312132145 is about 678.3380297104.

Adding to 312132145 its reverse (541231213), we get a palindrome (853363358).

The spelling of 312132145 in words is "three hundred twelve million, one hundred thirty-two thousand, one hundred forty-five".