1331012519 has 2 divisors, whose sum is σ = 1331012520. Its totient is φ = 1331012518.

The previous prime is 1331012489. The next prime is 1331012539. The reversal of 1331012519 is 9152101331.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1331012519 is a prime.

It is a super-2 number, since 2×1331012519² = 3543188651469450722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1331012539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665506259 + 665506260.

It is an arithmetic number, because the mean of its divisors is an integer number (665506260).

Almost surely, 2^1331012519 is an apocalyptic number.

1331012519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1331012519 is an equidigital number, since it uses as much as digits as its factorization.

1331012519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 1331012519 is about 36483.0442671661. The cubic root of 1331012519 is about 1100.0034487495.

The spelling of 1331012519 in words is "one billion, three hundred thirty-one million, twelve thousand, five hundred nineteen".