31225100166229 has 2 divisors, whose sum is σ = 31225100166230. Its totient is φ = 31225100166228.

The previous prime is 31225100166167. The next prime is 31225100166251. The reversal of 31225100166229 is 92266100152213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24735354106225 + 6489746060004 = 4973465^2 + 2547498^2 .

It is a cyclic number.

It is not a de Polignac number, because 31225100166229 - 2⁹ = 31225100165717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31225100166191 and 31225100166200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31225100166269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15612550083114 + 15612550083115.

It is an arithmetic number, because the mean of its divisors is an integer number (15612550083115).

Almost surely, 2^{31225100166229} is an apocalyptic number.

It is an amenable number.

31225100166229 is a deficient number, since it is larger than the sum of its proper divisors (1).

31225100166229 is an equidigital number, since it uses as much as digits as its factorization.

31225100166229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 40.

The spelling of 31225100166229 in words is "thirty-one trillion, two hundred twenty-five billion, one hundred million, one hundred sixty-six thousand, two hundred twenty-nine".