1523131 has 2 divisors, whose sum is σ = 1523132. Its totient is φ = 1523130.

The previous prime is 1523117. The next prime is 1523141. The reversal of 1523131 is 1313251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1523131 - 2⁵ = 1523099 is a prime.

It is a super-2 number, since 2×1523131² = 4639856086322, which contains 22 as substring.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (1523101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 761565 + 761566.

It is an arithmetic number, because the mean of its divisors is an integer number (761566).

2^1523131 is an apocalyptic number.

1523131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1523131 is an equidigital number, since it uses as much as digits as its factorization.

1523131 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1523131 is about 1234.1519355412. The cubic root of 1523131 is about 115.0568339114.

Adding to 1523131 its reverse (1313251), we get a palindrome (2836382).

The spelling of 1523131 in words is "one million, five hundred twenty-three thousand, one hundred thirty-one".