123345653 has 2 divisors, whose sum is σ = 123345654. Its totient is φ = 123345652.

The previous prime is 123345647. The next prime is 123345697. The reversal of 123345653 is 356543321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 105308644 + 18037009 = 10262^2 + 4247^2 .

It is a cyclic number.

It is not a de Polignac number, because 123345653 - 2¹⁶ = 123280117 is a prime.

It is a super-2 number, since 2×123345653² = 30428300227992818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123345643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61672826 + 61672827.

It is an arithmetic number, because the mean of its divisors is an integer number (61672827).

Almost surely, 2^123345653 is an apocalyptic number.

It is an amenable number.

123345653 is a deficient number, since it is larger than the sum of its proper divisors (1).

123345653 is an equidigital number, since it uses as much as digits as its factorization.

123345653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32400, while the sum is 32.

The square root of 123345653 is about 11106.1088145219. The cubic root of 123345653 is about 497.7844007413.

Adding to 123345653 its reverse (356543321), we get a palindrome (479888974).

The spelling of 123345653 in words is "one hundred twenty-three million, three hundred forty-five thousand, six hundred fifty-three".