31442342 has 8 divisors (see below), whose sum is σ = 48167136. Its totient is φ = 15386632.

The previous prime is 31442273. The next prime is 31442347. The reversal of 31442342 is 24324413.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31442347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167153 + ... + 167340.

It is an arithmetic number, because the mean of its divisors is an integer number (6020892).

Almost surely, 2^31442342 is an apocalyptic number.

31442342 is a deficient number, since it is larger than the sum of its proper divisors (16724794).

31442342 is a wasteful number, since it uses less digits than its factorization.

31442342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334542.

The product of its digits is 2304, while the sum is 23.

The square root of 31442342 is about 5607.3471445952. The cubic root of 31442342 is about 315.6251697806.

Adding to 31442342 its reverse (24324413), we get a palindrome (55766755).

The spelling of 31442342 in words is "thirty-one million, four hundred forty-two thousand, three hundred forty-two".