31042141 has 4 divisors (see below), whose sum is σ = 33430012. Its totient is φ = 28654272.

The previous prime is 31042133. The next prime is 31042159. The reversal of 31042141 is 14124013.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18232900 + 12809241 = 4270^2 + 3579^2 .

It is a cyclic number.

It is not a de Polignac number, because 31042141 - 2³ = 31042133 is a prime.

It is a super-2 number, since 2×31042141² = 1927229035727762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31042171) 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, 1193916 + ... + 1193941.

It is an arithmetic number, because the mean of its divisors is an integer number (8357503).

Almost surely, 2^31042141 is an apocalyptic number.

It is an amenable number.

31042141 is a deficient number, since it is larger than the sum of its proper divisors (2387871).

31042141 is a wasteful number, since it uses less digits than its factorization.

31042141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387870.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 31042141 is about 5571.5474511127. The cubic root of 31042141 is about 314.2803458646.

Adding to 31042141 its reverse (14124013), we get a palindrome (45166154).

The spelling of 31042141 in words is "thirty-one million, forty-two thousand, one hundred forty-one".