1523113131121 has 8 divisors (see below), whose sum is σ = 1533937950720. Its totient is φ = 1512323979072.

The previous prime is 1523113131031. The next prime is 1523113131217. The reversal of 1523113131121 is 1211313113251.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1523113131121 - 2⁷ = 1523113130993 is a prime.

It is a super-2 number, since 2×1523113131121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1523113131521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8831176 + ... + 9001993.

It is an arithmetic number, because the mean of its divisors is an integer number (191742243840).

Almost surely, 2^{1523113131121} is an apocalyptic number.

It is an amenable number.

1523113131121 is a deficient number, since it is larger than the sum of its proper divisors (10824819599).

1523113131121 is a wasteful number, since it uses less digits than its factorization.

1523113131121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17833775.

The product of its digits is 540, while the sum is 25.

Adding to 1523113131121 its reverse (1211313113251), we get a palindrome (2734426244372).

The spelling of 1523113131121 in words is "one trillion, five hundred twenty-three billion, one hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-one".