31243041 has 12 divisors (see below), whose sum is σ = 45869460. Its totient is φ = 20486880.

The previous prime is 31243013. The next prime is 31243061. The reversal of 31243041 is 14034213.

It can be written as a sum of positive squares in 2 ways, for example, as 3459600 + 27783441 = 1860^2 + 5271^2 .

It is not a de Polignac number, because 31243041 - 2¹³ = 31234849 is a prime.

It is a super-2 number, since 2×31243041² = 1952255221855362, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31243001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27906 + ... + 29003.

It is an arithmetic number, because the mean of its divisors is an integer number (3822455).

Almost surely, 2^31243041 is an apocalyptic number.

It is an amenable number.

31243041 is a deficient number, since it is larger than the sum of its proper divisors (14626419).

31243041 is a wasteful number, since it uses less digits than its factorization.

31243041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56976 (or 56973 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 31243041 is about 5589.5474772114. The cubic root of 31243041 is about 314.9568799631.

Adding to 31243041 its reverse (14034213), we get a palindrome (45277254).

The spelling of 31243041 in words is "thirty-one million, two hundred forty-three thousand, forty-one".