1511616131 has 2 divisors, whose sum is σ = 1511616132. Its totient is φ = 1511616130.

The previous prime is 1511616089. The next prime is 1511616133. The reversal of 1511616131 is 1316161151.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1511616131 - 2¹⁰ = 1511615107 is a prime.

It is a super-2 number, since 2×1511616131² = 4569966654998818322, which contains 22 as substring.

Together with 1511616133, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1511616131.

It is not a weakly prime, because it can be changed into another prime (1511616133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 755808065 + 755808066.

It is an arithmetic number, because the mean of its divisors is an integer number (755808066).

Almost surely, 2^1511616131 is an apocalyptic number.

1511616131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1511616131 is an equidigital number, since it uses as much as digits as its factorization.

1511616131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 26.

The square root of 1511616131 is about 38879.5078543955. The cubic root of 1511616131 is about 1147.6615698312.

Adding to 1511616131 its reverse (1316161151), we get a palindrome (2827777282).

The spelling of 1511616131 in words is "one billion, five hundred eleven million, six hundred sixteen thousand, one hundred thirty-one".