31141442 has 4 divisors (see below), whose sum is σ = 46712166. Its totient is φ = 15570720.

The previous prime is 31141441. The next prime is 31141459. The reversal of 31141442 is 24414113.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27678121 + 3463321 = 5261^2 + 1861^2 .

It is not an unprimeable number, because it can be changed into a prime (31141441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7785359 + ... + 7785362.

Almost surely, 2^31141442 is an apocalyptic number.

31141442 is a deficient number, since it is larger than the sum of its proper divisors (15570724).

31141442 is a wasteful number, since it uses less digits than its factorization.

31141442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15570723.

The product of its digits is 384, while the sum is 20.

The square root of 31141442 is about 5580.4517738262. The cubic root of 31141442 is about 314.6151072897.

Adding to 31141442 its reverse (24414113), we get a palindrome (55555555).

The spelling of 31141442 in words is "thirty-one million, one hundred forty-one thousand, four hundred forty-two".