30660133531 has 2 divisors, whose sum is σ = 30660133532. Its totient is φ = 30660133530.

The previous prime is 30660133519. The next prime is 30660133571. The reversal of 30660133531 is 13533106603.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30660133531 - 2¹¹ = 30660131483 is a prime.

It is a super-2 number, since 2×30660133531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30660133493 and 30660133502.

It is not a weakly prime, because it can be changed into another prime (30660133571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15330066765 + 15330066766.

It is an arithmetic number, because the mean of its divisors is an integer number (15330066766).

Almost surely, 2^30660133531 is an apocalyptic number.

30660133531 is a deficient number, since it is larger than the sum of its proper divisors (1).

30660133531 is an equidigital number, since it uses as much as digits as its factorization.

30660133531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14580, while the sum is 31.

The spelling of 30660133531 in words is "thirty billion, six hundred sixty million, one hundred thirty-three thousand, five hundred thirty-one".