1351623123123 has 32 divisors (see below), whose sum is σ = 2277995467776. Its totient is φ = 693675301248.

The previous prime is 1351623123113. The next prime is 1351623123131. The reversal of 1351623123123 is 3213213261531.

It is not a de Polignac number, because 1351623123123 - 2¹⁰ = 1351623122099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1351623123113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66895311 + ... + 66915512.

It is an arithmetic number, because the mean of its divisors is an integer number (71187358368).

Almost surely, 2^{1351623123123} is an apocalyptic number.

1351623123123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1351623123123 is a deficient number, since it is larger than the sum of its proper divisors (926372344653).

1351623123123 is a wasteful number, since it uses less digits than its factorization.

1351623123123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133810883.

The product of its digits is 19440, while the sum is 33.

Adding to 1351623123123 its reverse (3213213261531), we get a palindrome (4564836384654).

The spelling of 1351623123123 in words is "one trillion, three hundred fifty-one billion, six hundred twenty-three million, one hundred twenty-three thousand, one hundred twenty-three".