102053031209 has 2 divisors, whose sum is σ = 102053031210. Its totient is φ = 102053031208.

The previous prime is 102053031149. The next prime is 102053031253. The reversal of 102053031209 is 902130350201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57501642025 + 44551389184 = 239795^2 + 211072^2 .

It is a cyclic number.

It is not a de Polignac number, because 102053031209 - 2²⁰ = 102051982633 is a prime.

It is not a weakly prime, because it can be changed into another prime (102053031709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51026515604 + 51026515605.

It is an arithmetic number, because the mean of its divisors is an integer number (51026515605).

Almost surely, 2^102053031209 is an apocalyptic number.

It is an amenable number.

102053031209 is a deficient number, since it is larger than the sum of its proper divisors (1).

102053031209 is an equidigital number, since it uses as much as digits as its factorization.

102053031209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

The spelling of 102053031209 in words is "one hundred two billion, fifty-three million, thirty-one thousand, two hundred nine".