31343141 has 4 divisors (see below), whose sum is σ = 32992800. Its totient is φ = 29693484.

The previous prime is 31343131. The next prime is 31343153. The reversal of 31343141 is 14134313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14134313 = 1697 ⋅8329.

It is a cyclic number.

It is not a de Polignac number, because 31343141 - 2²² = 27148837 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 (31343131) 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, 824801 + ... + 824838.

It is an arithmetic number, because the mean of its divisors is an integer number (8248200).

Almost surely, 2^31343141 is an apocalyptic number.

It is an amenable number.

31343141 is a deficient number, since it is larger than the sum of its proper divisors (1649659).

31343141 is a wasteful number, since it uses less digits than its factorization.

31343141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1649658.

The product of its digits is 432, while the sum is 20.

The square root of 31343141 is about 5598.4945297821. The cubic root of 31343141 is about 315.2928862369.

Adding to 31343141 its reverse (14134313), we get a palindrome (45477454).

The spelling of 31343141 in words is "thirty-one million, three hundred forty-three thousand, one hundred forty-one".