3131220304229 has 2 divisors, whose sum is σ = 3131220304230. Its totient is φ = 3131220304228.

The previous prime is 3131220304211. The next prime is 3131220304273. The reversal of 3131220304229 is 9224030221313.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3103622124100 + 27598180129 = 1761710^2 + 166127^2 .

It is a cyclic number.

It is not a de Polignac number, because 3131220304229 - 2²⁴ = 3131203527013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3131220304195 and 3131220304204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3131220306229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565610152114 + 1565610152115.

It is an arithmetic number, because the mean of its divisors is an integer number (1565610152115).

Almost surely, 2^{3131220304229} is an apocalyptic number.

It is an amenable number.

3131220304229 is a deficient number, since it is larger than the sum of its proper divisors (1).

3131220304229 is an equidigital number, since it uses as much as digits as its factorization.

3131220304229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 3131220304229 in words is "three trillion, one hundred thirty-one billion, two hundred twenty million, three hundred four thousand, two hundred twenty-nine".