1513131311 has 2 divisors, whose sum is σ = 1513131312. Its totient is φ = 1513131310.

The previous prime is 1513131307. The next prime is 1513131331. The reversal of 1513131311 is 1131313151.

It is an a-pointer prime, because the next prime (1513131331) can be obtained adding 1513131311 to its sum of digits (20).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1513131311 - 2² = 1513131307 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1513131331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756565655 + 756565656.

It is an arithmetic number, because the mean of its divisors is an integer number (756565656).

Almost surely, 2^1513131311 is an apocalyptic number.

1513131311 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513131311 is an equidigital number, since it uses as much as digits as its factorization.

1513131311 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 135, while the sum is 20.

The square root of 1513131311 is about 38898.9885601155. The cubic root of 1513131311 is about 1148.0448975690.

Adding to 1513131311 its reverse (1131313151), we get a palindrome (2644444462).

The spelling of 1513131311 in words is "one billion, five hundred thirteen million, one hundred thirty-one thousand, three hundred eleven".