523131374 has 4 divisors (see below), whose sum is σ = 784697064. Its totient is φ = 261565686.

The previous prime is 523131373. The next prime is 523131391. The reversal of 523131374 is 473131325.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523131373) 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 as a sum of consecutive naturals, namely, 130782842 + ... + 130782845.

It is an arithmetic number, because the mean of its divisors is an integer number (196174266).

Almost surely, 2^523131374 is an apocalyptic number.

523131374 is a deficient number, since it is larger than the sum of its proper divisors (261565690).

523131374 is a wasteful number, since it uses less digits than its factorization.

523131374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261565689.

The product of its digits is 7560, while the sum is 29.

The square root of 523131374 is about 22872.0653636702. The cubic root of 523131374 is about 805.7560757849.

Adding to 523131374 its reverse (473131325), we get a palindrome (996262699).

The spelling of 523131374 in words is "five hundred twenty-three million, one hundred thirty-one thousand, three hundred seventy-four".