31679077 has 2 divisors, whose sum is σ = 31679078. Its totient is φ = 31679076.

The previous prime is 31679071. The next prime is 31679083. The reversal of 31679077 is 77097613.

It is a balanced prime because it is at equal distance from previous prime (31679071) and next prime (31679083).

It can be written as a sum of positive squares in only one way, i.e., 20349121 + 11329956 = 4511^2 + 3366^2 .

It is an emirp because it is prime and its reverse (77097613) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 31679077 - 2¹⁵ = 31646309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31679071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15839538 + 15839539.

It is an arithmetic number, because the mean of its divisors is an integer number (15839539).

Almost surely, 2^31679077 is an apocalyptic number.

It is an amenable number.

31679077 is a deficient number, since it is larger than the sum of its proper divisors (1).

31679077 is an equidigital number, since it uses as much as digits as its factorization.

31679077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55566, while the sum is 40.

The square root of 31679077 is about 5628.4169177487. The cubic root of 31679077 is about 316.4153227481.

The spelling of 31679077 in words is "thirty-one million, six hundred seventy-nine thousand, seventy-seven".