30983121551 has 2 divisors, whose sum is σ = 30983121552. Its totient is φ = 30983121550.

The previous prime is 30983121541. The next prime is 30983121569. The reversal of 30983121551 is 15512138903.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30983121551 - 2¹⁸ = 30982859407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30983121541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15491560775 + 15491560776.

It is an arithmetic number, because the mean of its divisors is an integer number (15491560776).

Almost surely, 2^30983121551 is an apocalyptic number.

30983121551 is a deficient number, since it is larger than the sum of its proper divisors (1).

30983121551 is an equidigital number, since it uses as much as digits as its factorization.

30983121551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The spelling of 30983121551 in words is "thirty billion, nine hundred eighty-three million, one hundred twenty-one thousand, five hundred fifty-one".