31442271 has 24 divisors (see below), whose sum is σ = 49248000. Its totient is φ = 17790192.

The previous prime is 31442269. The next prime is 31442273. The reversal of 31442271 is 17224413.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31442269) and next prime (31442273).

It is not a de Polignac number, because 31442271 - 2¹ = 31442269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14730 + ... + 16728.

It is an arithmetic number, because the mean of its divisors is an integer number (2052000).

Almost surely, 2^31442271 is an apocalyptic number.

31442271 is a deficient number, since it is larger than the sum of its proper divisors (17805729).

31442271 is a wasteful number, since it uses less digits than its factorization.

31442271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2123 (or 2116 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 31442271 is about 5607.3408136121. The cubic root of 31442271 is about 315.6249322092.

Adding to 31442271 its reverse (17224413), we get a palindrome (48666684).

It can be divided in two parts, 31442 and 271, that added together give a palindrome (31713).

The spelling of 31442271 in words is "thirty-one million, four hundred forty-two thousand, two hundred seventy-one".