30349261 has 2 divisors, whose sum is σ = 30349262. Its totient is φ = 30349260.

The previous prime is 30349243. The next prime is 30349273. The reversal of 30349261 is 16294303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27352900 + 2996361 = 5230^2 + 1731^2 .

It is a cyclic number.

It is not a de Polignac number, because 30349261 - 2¹⁵ = 30316493 is a prime.

It is a super-2 number, since 2×30349261² = 1842155286492242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30349211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15174630 + 15174631.

It is an arithmetic number, because the mean of its divisors is an integer number (15174631).

Almost surely, 2^30349261 is an apocalyptic number.

It is an amenable number.

30349261 is a deficient number, since it is larger than the sum of its proper divisors (1).

30349261 is an equidigital number, since it uses as much as digits as its factorization.

30349261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 30349261 is about 5509.0163368790. The cubic root of 30349261 is about 311.9244180549.

The spelling of 30349261 in words is "thirty million, three hundred forty-nine thousand, two hundred sixty-one".