523145131 has 8 divisors (see below), whose sum is σ = 558282240. Its totient is φ = 488492928.

The previous prime is 523145101. The next prime is 523145159. The reversal of 523145131 is 131541325.

It is a happy number.

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 523145131 - 2⁷ = 523145003 is a prime.

It is a super-2 number, since 2×523145131² = 547361656178014322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 523145096 and 523145105.

It is not an unprimeable number, because it can be changed into a prime (523145101) 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 7 ways as a sum of consecutive naturals, for example, 118996 + ... + 123313.

It is an arithmetic number, because the mean of its divisors is an integer number (69785280).

Almost surely, 2^523145131 is an apocalyptic number.

523145131 is a deficient number, since it is larger than the sum of its proper divisors (35137109).

523145131 is a wasteful number, since it uses less digits than its factorization.

523145131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242453.

The product of its digits is 1800, while the sum is 25.

The square root of 523145131 is about 22872.3660997283. The cubic root of 523145131 is about 805.7631388222.

Adding to 523145131 its reverse (131541325), we get a palindrome (654686456).

The spelling of 523145131 in words is "five hundred twenty-three million, one hundred forty-five thousand, one hundred thirty-one".