42831315 has 16 divisors (see below), whose sum is σ = 76144800. Its totient is φ = 22843296.

The previous prime is 42831307. The next prime is 42831317. The reversal of 42831315 is 51313824.

It is a happy number.

It is not a de Polignac number, because 42831315 - 2³ = 42831307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (42831317) 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, 158500 + ... + 158769.

It is an arithmetic number, because the mean of its divisors is an integer number (4759050).

Almost surely, 2^42831315 is an apocalyptic number.

42831315 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

42831315 is a deficient number, since it is larger than the sum of its proper divisors (33313485).

42831315 is a wasteful number, since it uses less digits than its factorization.

42831315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317283 (or 317277 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 42831315 is about 6544.5637746148. The cubic root of 42831315 is about 349.8810888567.

The spelling of 42831315 in words is "forty-two million, eight hundred thirty-one thousand, three hundred fifteen".