31914671 has 2 divisors, whose sum is σ = 31914672. Its totient is φ = 31914670.

The previous prime is 31914647. The next prime is 31914691. The reversal of 31914671 is 17641913.

It is a strong prime.

It is an emirp because it is prime and its reverse (17641913) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31914671 - 2⁶ = 31914607 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31914691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15957335 + 15957336.

It is an arithmetic number, because the mean of its divisors is an integer number (15957336).

Almost surely, 2^31914671 is an apocalyptic number.

31914671 is a deficient number, since it is larger than the sum of its proper divisors (1).

31914671 is an equidigital number, since it uses as much as digits as its factorization.

31914671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 32.

The square root of 31914671 is about 5649.3071256571. The cubic root of 31914671 is about 317.1977688976.

The spelling of 31914671 in words is "thirty-one million, nine hundred fourteen thousand, six hundred seventy-one".