31869041 has 4 divisors (see below), whose sum is σ = 32006052. Its totient is φ = 31732032.

The previous prime is 31869037. The next prime is 31869043. The reversal of 31869041 is 14096813.

It is a happy number.

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 1849600 + 30019441 = 1360^2 + 5479^2 .

It is a cyclic number.

It is not a de Polignac number, because 31869041 - 2² = 31869037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31868989 and 31869007.

It is not an unprimeable number, because it can be changed into a prime (31869043) 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, 68156 + ... + 68621.

It is an arithmetic number, because the mean of its divisors is an integer number (8001513).

Almost surely, 2^31869041 is an apocalyptic number.

It is an amenable number.

31869041 is a deficient number, since it is larger than the sum of its proper divisors (137011).

31869041 is a wasteful number, since it uses less digits than its factorization.

31869041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137010.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 31869041 is about 5645.2671327405. The cubic root of 31869041 is about 317.0465256275.

The spelling of 31869041 in words is "thirty-one million, eight hundred sixty-nine thousand, forty-one".