123020131453 has 4 divisors (see below), whose sum is σ = 123256255068. Its totient is φ = 122784007840.

The previous prime is 123020131439. The next prime is 123020131561. The reversal of 123020131453 is 354131020321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354131020321 = 13 ⋅27240847717.

It can be written as a sum of positive squares in 2 ways, for example, as 54850576804 + 68169554649 = 234202^2 + 261093^2 .

It is a cyclic number.

It is not a de Polignac number, because 123020131453 - 2¹⁷ = 123020000381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123020131753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118061026 + ... + 118062067.

It is an arithmetic number, because the mean of its divisors is an integer number (30814063767).

Almost surely, 2^123020131453 is an apocalyptic number.

It is an amenable number.

123020131453 is a deficient number, since it is larger than the sum of its proper divisors (236123615).

123020131453 is an equidigital number, since it uses as much as digits as its factorization.

123020131453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236123614.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 123020131453 its reverse (354131020321), we get a palindrome (477151151774).

The spelling of 123020131453 in words is "one hundred twenty-three billion, twenty million, one hundred thirty-one thousand, four hundred fifty-three".