31012200220949 has 2 divisors, whose sum is σ = 31012200220950. Its totient is φ = 31012200220948.

The previous prime is 31012200220933. The next prime is 31012200220987. The reversal of 31012200220949 is 94902200221013.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31011455476849 + 744744100 = 5568793^2 + 27290^2 .

It is a cyclic number.

It is not a de Polignac number, because 31012200220949 - 2⁴ = 31012200220933 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31012200220919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506100110474 + 15506100110475.

It is an arithmetic number, because the mean of its divisors is an integer number (15506100110475).

Almost surely, 2^{31012200220949} is an apocalyptic number.

It is an amenable number.

31012200220949 is a deficient number, since it is larger than the sum of its proper divisors (1).

31012200220949 is an equidigital number, since it uses as much as digits as its factorization.

31012200220949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 31012200220949 in words is "thirty-one trillion, twelve billion, two hundred million, two hundred twenty thousand, nine hundred forty-nine".