31474673 has 2 divisors, whose sum is σ = 31474674. Its totient is φ = 31474672.

The previous prime is 31474669. The next prime is 31474687. The reversal of 31474673 is 37647413.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20866624 + 10608049 = 4568^2 + 3257^2 .

It is an emirp because it is prime and its reverse (37647413) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31474673 - 2² = 31474669 is a prime.

It is not a weakly prime, because it can be changed into another prime (31474693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15737336 + 15737337.

It is an arithmetic number, because the mean of its divisors is an integer number (15737337).

Almost surely, 2^31474673 is an apocalyptic number.

It is an amenable number.

31474673 is a deficient number, since it is larger than the sum of its proper divisors (1).

31474673 is an equidigital number, since it uses as much as digits as its factorization.

31474673 is an evil number, because the sum of its binary digits is even.

The product of its digits is 42336, while the sum is 35.

The square root of 31474673 is about 5610.2293179513. The cubic root of 31474673 is about 315.7333146270.

The spelling of 31474673 in words is "thirty-one million, four hundred seventy-four thousand, six hundred seventy-three".