1031523131 has 2 divisors, whose sum is σ = 1031523132. Its totient is φ = 1031523130.

The previous prime is 1031523107. The next prime is 1031523133. The reversal of 1031523131 is 1313251301.

It is a strong prime.

It is an emirp because it is prime and its reverse (1313251301) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1031523131 is a prime.

It is a super-2 number, since 2×1031523131² = 2128079939576086322, which contains 22 as substring.

Together with 1031523133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1031523133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 515761565 + 515761566.

It is an arithmetic number, because the mean of its divisors is an integer number (515761566).

Almost surely, 2^1031523131 is an apocalyptic number.

1031523131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1031523131 is an equidigital number, since it uses as much as digits as its factorization.

1031523131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 1031523131 is about 32117.3338090197. Note that the first 3 decimals coincide. The cubic root of 1031523131 is about 1010.3991922662.

Adding to 1031523131 its reverse (1313251301), we get a palindrome (2344774432).

The spelling of 1031523131 in words is "one billion, thirty-one million, five hundred twenty-three thousand, one hundred thirty-one".