523491031 has 8 divisors (see below), whose sum is σ = 599169824. Its totient is φ = 448035840.

The previous prime is 523491019. The next prime is 523491041. The reversal of 523491031 is 130194325.

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

It is not a de Polignac number, because 523491031 - 2⁵ = 523490999 is a prime.

It is a super-2 number, since 2×523491031² = 548085719074885922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523491041) 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, 50850 + ... + 60271.

It is an arithmetic number, because the mean of its divisors is an integer number (74896228).

Almost surely, 2^523491031 is an apocalyptic number.

523491031 is a deficient number, since it is larger than the sum of its proper divisors (75678793).

523491031 is a wasteful number, since it uses less digits than its factorization.

523491031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111801.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 523491031 is about 22879.9263766298. The cubic root of 523491031 is about 805.9406880642.

The spelling of 523491031 in words is "five hundred twenty-three million, four hundred ninety-one thousand, thirty-one".