30677481421 has 2 divisors, whose sum is σ = 30677481422. Its totient is φ = 30677481420.

The previous prime is 30677481407. The next prime is 30677481431. The reversal of 30677481421 is 12418477603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18678688900 + 11998792521 = 136670^2 + 109539^2 .

It is a cyclic number.

It is not a de Polignac number, because 30677481421 - 2²⁷ = 30543263693 is a prime.

It is a super-2 number, since 2×30677481421² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30677481431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15338740710 + 15338740711.

It is an arithmetic number, because the mean of its divisors is an integer number (15338740711).

Almost surely, 2^30677481421 is an apocalyptic number.

It is an amenable number.

30677481421 is a deficient number, since it is larger than the sum of its proper divisors (1).

30677481421 is an equidigital number, since it uses as much as digits as its factorization.

30677481421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 43.

The spelling of 30677481421 in words is "thirty billion, six hundred seventy-seven million, four hundred eighty-one thousand, four hundred twenty-one".