117213653 has 2 divisors, whose sum is σ = 117213654. Its totient is φ = 117213652.

The previous prime is 117213647. The next prime is 117213659. The reversal of 117213653 is 356312711.

It is a balanced prime because it is at equal distance from previous prime (117213647) and next prime (117213659).

It can be written as a sum of positive squares in only one way, i.e., 117115684 + 97969 = 10822^2 + 313^2 .

It is a cyclic number.

It is not a de Polignac number, because 117213653 - 2⁴ = 117213637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117213659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58606826 + 58606827.

It is an arithmetic number, because the mean of its divisors is an integer number (58606827).

Almost surely, 2^117213653 is an apocalyptic number.

It is an amenable number.

117213653 is a deficient number, since it is larger than the sum of its proper divisors (1).

117213653 is an equidigital number, since it uses as much as digits as its factorization.

117213653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 29.

The square root of 117213653 is about 10826.5254352447. The cubic root of 117213653 is about 489.3948561836.

The spelling of 117213653 in words is "one hundred seventeen million, two hundred thirteen thousand, six hundred fifty-three".