31354245677 has 2 divisors, whose sum is σ = 31354245678. Its totient is φ = 31354245676.

The previous prime is 31354245667. The next prime is 31354245709. The reversal of 31354245677 is 77654245313.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29326905001 + 2027340676 = 171251^2 + 45026^2 .

It is a cyclic number.

It is not a de Polignac number, because 31354245677 - 2¹⁰ = 31354244653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31354245667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15677122838 + 15677122839.

It is an arithmetic number, because the mean of its divisors is an integer number (15677122839).

Almost surely, 2^31354245677 is an apocalyptic number.

It is an amenable number.

31354245677 is a deficient number, since it is larger than the sum of its proper divisors (1).

31354245677 is an equidigital number, since it uses as much as digits as its factorization.

31354245677 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2116800, while the sum is 47.

The spelling of 31354245677 in words is "thirty-one billion, three hundred fifty-four million, two hundred forty-five thousand, six hundred seventy-seven".