31230142 has 8 divisors (see below), whose sum is σ = 46870416. Its totient is φ = 15606672.

The previous prime is 31230079. The next prime is 31230163. The reversal of 31230142 is 24103213.

It is a happy number.

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, 2743 + ... + 8365.

It is an arithmetic number, because the mean of its divisors is an integer number (5858802).

Almost surely, 2^31230142 is an apocalyptic number.

31230142 is a deficient number, since it is larger than the sum of its proper divisors (15640274).

31230142 is a wasteful number, since it uses less digits than its factorization.

31230142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8402.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 31230142 is about 5588.3935079770. The cubic root of 31230142 is about 314.9135296372.

Adding to 31230142 its reverse (24103213), we get a palindrome (55333355).

The spelling of 31230142 in words is "thirty-one million, two hundred thirty thousand, one hundred forty-two".