31442134 has 4 divisors (see below), whose sum is σ = 47163204. Its totient is φ = 15721066.

The previous prime is 31442113. The next prime is 31442141. The reversal of 31442134 is 43124413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43124413 = 1129 ⋅38197.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7860532 + ... + 7860535.

It is an arithmetic number, because the mean of its divisors is an integer number (11790801).

Almost surely, 2^31442134 is an apocalyptic number.

31442134 is a deficient number, since it is larger than the sum of its proper divisors (15721070).

31442134 is a wasteful number, since it uses less digits than its factorization.

31442134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15721069.

The product of its digits is 1152, while the sum is 22.

The square root of 31442134 is about 5607.3285974696. The cubic root of 31442134 is about 315.6244737958.

Adding to 31442134 its reverse (43124413), we get a palindrome (74566547).

The spelling of 31442134 in words is "thirty-one million, four hundred forty-two thousand, one hundred thirty-four".