31223310077 has 2 divisors, whose sum is σ = 31223310078. Its totient is φ = 31223310076.

The previous prime is 31223310047. The next prime is 31223310119. The reversal of 31223310077 is 77001332213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30322649956 + 900660121 = 174134^2 + 30011^2 .

It is a cyclic number.

It is not a de Polignac number, because 31223310077 - 2¹⁶ = 31223244541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31223310017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611655038 + 15611655039.

It is an arithmetic number, because the mean of its divisors is an integer number (15611655039).

Almost surely, 2^31223310077 is an apocalyptic number.

It is an amenable number.

31223310077 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223310077 is an equidigital number, since it uses as much as digits as its factorization.

31223310077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 29.

The spelling of 31223310077 in words is "thirty-one billion, two hundred twenty-three million, three hundred ten thousand, seventy-seven".