1531123 has 8 divisors (see below), whose sum is σ = 1686960. Its totient is φ = 1378080.

The previous prime is 1531111. The next prime is 1531129. The reversal of 1531123 is 3211351.

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

It is not a de Polignac number, because 1531123 - 2⁵ = 1531091 is a prime.

It is a super-2 number, since 2×1531123² = 4688675282258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1531097 and 1531106.

It is not an unprimeable number, because it can be changed into a prime (1531129) 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, 561 + ... + 1837.

It is an arithmetic number, because the mean of its divisors is an integer number (210870).

2^1531123 is an apocalyptic number.

1531123 is a deficient number, since it is larger than the sum of its proper divisors (155837).

1531123 is a wasteful number, since it uses less digits than its factorization.

1531123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397.

The product of its digits is 90, while the sum is 16.

The square root of 1531123 is about 1237.3855502631. The cubic root of 1531123 is about 115.2577206805.

Adding to 1531123 its reverse (3211351), we get a palindrome (4742474).

The spelling of 1531123 in words is "one million, five hundred thirty-one thousand, one hundred twenty-three".