30900853 has 2 divisors, whose sum is σ = 30900854. Its totient is φ = 30900852.

The previous prime is 30900841. The next prime is 30900871. The reversal of 30900853 is 35800903.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30272004 + 628849 = 5502^2 + 793^2 .

It is a cyclic number.

It is not a de Polignac number, because 30900853 - 2¹³ = 30892661 is a prime.

It is a super-2 number, since 2×30900853² = 1909725432255218, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30900803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15450426 + 15450427.

It is an arithmetic number, because the mean of its divisors is an integer number (15450427).

Almost surely, 2^30900853 is an apocalyptic number.

It is an amenable number.

30900853 is a deficient number, since it is larger than the sum of its proper divisors (1).

30900853 is an equidigital number, since it uses as much as digits as its factorization.

30900853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 30900853 is about 5558.8535688575. The cubic root of 30900853 is about 313.8028059879.

The spelling of 30900853 in words is "thirty million, nine hundred thousand, eight hundred fifty-three".