31742441 has 2 divisors, whose sum is σ = 31742442. Its totient is φ = 31742440.

The previous prime is 31742401. The next prime is 31742449. The reversal of 31742441 is 14424713.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25290841 + 6451600 = 5029^2 + 2540^2 .

It is an emirp because it is prime and its reverse (14424713) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31742441 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31742441.

It is not a weakly prime, because it can be changed into another prime (31742449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15871220 + 15871221.

It is an arithmetic number, because the mean of its divisors is an integer number (15871221).

Almost surely, 2^31742441 is an apocalyptic number.

It is an amenable number.

31742441 is a deficient number, since it is larger than the sum of its proper divisors (1).

31742441 is an equidigital number, since it uses as much as digits as its factorization.

31742441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 26.

The square root of 31742441 is about 5634.0430420791. The cubic root of 31742441 is about 316.6261452613.

The spelling of 31742441 in words is "thirty-one million, seven hundred forty-two thousand, four hundred forty-one".