31925741 has 2 divisors, whose sum is σ = 31925742. Its totient is φ = 31925740.

The previous prime is 31925713. The next prime is 31925743. The reversal of 31925741 is 14752913.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31685641 + 240100 = 5629^2 + 490^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31925741 is a prime.

It is a Sophie Germain prime.

Together with 31925743, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31925698 and 31925707.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31925743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15962870 + 15962871.

It is an arithmetic number, because the mean of its divisors is an integer number (15962871).

Almost surely, 2^31925741 is an apocalyptic number.

It is an amenable number.

31925741 is a deficient number, since it is larger than the sum of its proper divisors (1).

31925741 is an equidigital number, since it uses as much as digits as its factorization.

31925741 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 31925741 is about 5650.2868068798. The cubic root of 31925741 is about 317.2344393199.

The spelling of 31925741 in words is "thirty-one million, nine hundred twenty-five thousand, seven hundred forty-one".