31349701 has 2 divisors, whose sum is σ = 31349702. Its totient is φ = 31349700.

The previous prime is 31349687. The next prime is 31349723. The reversal of 31349701 is 10794313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31348801 + 900 = 5599^2 + 30^2 .

It is an emirp because it is prime and its reverse (10794313) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31349701 - 2⁹ = 31349189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 31349701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31349771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15674850 + 15674851.

It is an arithmetic number, because the mean of its divisors is an integer number (15674851).

Almost surely, 2^31349701 is an apocalyptic number.

It is an amenable number.

31349701 is a deficient number, since it is larger than the sum of its proper divisors (1).

31349701 is an equidigital number, since it uses as much as digits as its factorization.

31349701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 31349701 is about 5599.0803709181. The cubic root of 31349701 is about 315.3148812357.

The spelling of 31349701 in words is "thirty-one million, three hundred forty-nine thousand, seven hundred one".