30990519 has 28 divisors (see below), whose sum is σ = 53111056. Its totient is φ = 17705952.

The previous prime is 30990503. The next prime is 30990523. The reversal of 30990519 is 91509903.

It is not a de Polignac number, because 30990519 - 2⁴ = 30990503 is a prime.

It is a super-2 number, since 2×30990519² = 1920824535778722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990529) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 2067 + ... + 8139.

Almost surely, 2^30990519 is an apocalyptic number.

30990519 is a deficient number, since it is larger than the sum of its proper divisors (22120537).

30990519 is an frugal number, since it uses more digits than its factorization.

30990519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098 (or 6083 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 30990519 is about 5566.9128787866. The cubic root of 30990519 is about 314.1060367802.

The spelling of 30990519 in words is "thirty million, nine hundred ninety thousand, five hundred nineteen".