4312155 has 32 divisors (see below), whose sum is σ = 7464960. Its totient is φ = 2119040.

The previous prime is 4312153. The next prime is 4312157. The reversal of 4312155 is 5512134.

It is an interprime number because it is at equal distance from previous prime (4312153) and next prime (4312157).

It is not a de Polignac number, because 4312155 - 2¹ = 4312153 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4312153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9790 + ... + 10220.

It is an arithmetic number, because the mean of its divisors is an integer number (233280).

Almost surely, 2^4312155 is an apocalyptic number.

4312155 is a deficient number, since it is larger than the sum of its proper divisors (3152805).

4312155 is a wasteful number, since it uses less digits than its factorization.

4312155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its digits is 600, while the sum is 21.

The square root of 4312155 is about 2076.5728978295. The cubic root of 4312155 is about 162.7664111190.

Subtracting from 4312155 its sum of digits (21), we obtain a palindrome (4312134).

Adding to 4312155 its reverse (5512134), we get a palindrome (9824289).

The spelling of 4312155 in words is "four million, three hundred twelve thousand, one hundred fifty-five".