1531133023 has 8 divisors (see below), whose sum is σ = 1825947648. Its totient is φ = 1255338744.

The previous prime is 1531133011. The next prime is 1531133029. The reversal of 1531133023 is 3203311351.

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 1531133023 - 2⁵ = 1531132991 is a prime.

It is a super-2 number, since 2×1531133023² = 4688736668242237058, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1531132985 and 1531133003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531133029) 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, 4754911 + ... + 4755232.

It is an arithmetic number, because the mean of its divisors is an integer number (228243456).

Almost surely, 2^1531133023 is an apocalyptic number.

1531133023 is a deficient number, since it is larger than the sum of its proper divisors (294814625).

1531133023 is an equidigital number, since it uses as much as digits as its factorization.

1531133023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9510173.

The product of its (nonzero) digits is 810, while the sum is 22.

The square root of 1531133023 is about 39129.6949004206. The cubic root of 1531133023 is about 1152.5797217907.

Adding to 1531133023 its reverse (3203311351), we get a palindrome (4734444374).

The spelling of 1531133023 in words is "one billion, five hundred thirty-one million, one hundred thirty-three thousand, twenty-three".