31153142 has 8 divisors (see below), whose sum is σ = 46754832. Its totient is φ = 15568200.

The previous prime is 31153093. The next prime is 31153169. The reversal of 31153142 is 24135113.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2792 + ... + 8372.

It is an arithmetic number, because the mean of its divisors is an integer number (5844354).

Almost surely, 2^31153142 is an apocalyptic number.

It is a pronic number, being equal to 5581×5582.

31153142 is a deficient number, since it is larger than the sum of its proper divisors (15601690).

31153142 is a wasteful number, since it uses less digits than its factorization.

31153142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8374.

The product of its digits is 360, while the sum is 20.

The square root of 31153142 is about 5581.4999776046. The cubic root of 31153142 is about 314.6545031946.

Adding to 31153142 its reverse (24135113), we get a palindrome (55288255).

The spelling of 31153142 in words is "thirty-one million, one hundred fifty-three thousand, one hundred forty-two".