1531057023 has 12 divisors (see below), whose sum is σ = 2212643160. Its totient is φ = 1020189456.

The previous prime is 1531057013. The next prime is 1531057027. The reversal of 1531057023 is 3207501351.

It is not a de Polignac number, because 1531057023 - 2⁵ = 1531056991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1531057027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23661 + ... + 60182.

It is an arithmetic number, because the mean of its divisors is an integer number (184386930).

Almost surely, 2^1531057023 is an apocalyptic number.

1531057023 is a deficient number, since it is larger than the sum of its proper divisors (681586137).

1531057023 is a wasteful number, since it uses less digits than its factorization.

1531057023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85878 (or 85875 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 27.

The square root of 1531057023 is about 39128.7237588961. The cubic root of 1531057023 is about 1152.5606514885.

Adding to 1531057023 its reverse (3207501351), we get a palindrome (4738558374).

The spelling of 1531057023 in words is "one billion, five hundred thirty-one million, fifty-seven thousand, twenty-three".