1313131123 has 2 divisors, whose sum is σ = 1313131124. Its totient is φ = 1313131122.

The previous prime is 1313131117. The next prime is 1313131129. The reversal of 1313131123 is 3211313131.

It is a balanced prime because it is at equal distance from previous prime (1313131117) and next prime (1313131129).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313131123 is a prime.

It is a super-2 number, since 2×1313131123² = 3448626692382482258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1313131123.

It is not a weakly prime, because it can be changed into another prime (1313131129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656565561 + 656565562.

It is an arithmetic number, because the mean of its divisors is an integer number (656565562).

Almost surely, 2^1313131123 is an apocalyptic number.

1313131123 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313131123 is an equidigital number, since it uses as much as digits as its factorization.

1313131123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 19.

The square root of 1313131123 is about 36237.1511435433. The cubic root of 1313131123 is about 1095.0552498828.

Adding to 1313131123 its reverse (3211313131), we get a palindrome (4524444254).

The spelling of 1313131123 in words is "one billion, three hundred thirteen million, one hundred thirty-one thousand, one hundred twenty-three".