31133141 has 8 divisors (see below), whose sum is σ = 33580344. Its totient is φ = 28693440.

The previous prime is 31133131. The next prime is 31133147. The reversal of 31133141 is 14133113.

It can be written as a sum of positive squares in 4 ways, for example, as 5982916 + 25150225 = 2446^2 + 5015^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31133141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9215 + ... + 12131.

It is an arithmetic number, because the mean of its divisors is an integer number (4197543).

Almost surely, 2^31133141 is an apocalyptic number.

It is an amenable number.

31133141 is a deficient number, since it is larger than the sum of its proper divisors (2447203).

31133141 is a wasteful number, since it uses less digits than its factorization.

31133141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751.

The product of its digits is 108, while the sum is 17.

The square root of 31133141 is about 5579.7079672685. The cubic root of 31133141 is about 314.5871504159.

Adding to 31133141 its reverse (14133113), we get a palindrome (45266254).

The spelling of 31133141 in words is "thirty-one million, one hundred thirty-three thousand, one hundred forty-one".