31406741 has 2 divisors, whose sum is σ = 31406742. Its totient is φ = 31406740.

The previous prime is 31406737. The next prime is 31406743. The reversal of 31406741 is 14760413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25300900 + 6105841 = 5030^2 + 2471^2 .

It is an emirp because it is prime and its reverse (14760413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31406741 - 2² = 31406737 is a prime.

Together with 31406743, it forms a pair of twin primes.

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 31406741.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31406743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15703370 + 15703371.

It is an arithmetic number, because the mean of its divisors is an integer number (15703371).

Almost surely, 2^31406741 is an apocalyptic number.

It is an amenable number.

31406741 is a deficient number, since it is larger than the sum of its proper divisors (1).

31406741 is an equidigital number, since it uses as much as digits as its factorization.

31406741 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 31406741 is about 5604.1717496879. The cubic root of 31406741 is about 315.5060012270.

The spelling of 31406741 in words is "thirty-one million, four hundred six thousand, seven hundred forty-one".