31112141 has 4 divisors (see below), whose sum is σ = 31420284. Its totient is φ = 30804000.

The previous prime is 31112131. The next prime is 31112143. The reversal of 31112141 is 14121113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14121113 = 101 ⋅139813.

It can be written as a sum of positive squares in 2 ways, for example, as 30758116 + 354025 = 5546^2 + 595^2 .

It is a cyclic number.

It is not a de Polignac number, because 31112141 - 2²² = 26917837 is a prime.

It is a super-3 number, since 3×31112141³ (a number of 23 digits) contains 333 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 (31112143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153920 + ... + 154121.

It is an arithmetic number, because the mean of its divisors is an integer number (7855071).

Almost surely, 2^31112141 is an apocalyptic number.

It is an amenable number.

31112141 is a deficient number, since it is larger than the sum of its proper divisors (308143).

31112141 is a wasteful number, since it uses less digits than its factorization.

31112141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308142.

The product of its digits is 24, while the sum is 14.

The square root of 31112141 is about 5577.8258309130. The cubic root of 31112141 is about 314.5164024832.

Adding to 31112141 its reverse (14121113), we get a palindrome (45233254).

The spelling of 31112141 in words is "thirty-one million, one hundred twelve thousand, one hundred forty-one".