30131311320133 has 16 divisors (see below), whose sum is σ = 32014130269680. Its totient is φ = 28304813408256.

The previous prime is 30131311320119. The next prime is 30131311320157. The reversal of 30131311320133 is 33102311313103.

It can be written as a sum of positive squares in 8 ways, for example, as 6811510152769 + 23319801167364 = 2609887^2 + 4829058^2 .

It is a cyclic number.

It is not a de Polignac number, because 30131311320133 - 2⁹ = 30131311319621 is a prime.

It is a super-2 number, since 2×30131311320133² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30131311320098 and 30131311320107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30131311320113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25049541 + ... + 26224837.

It is an arithmetic number, because the mean of its divisors is an integer number (2000883141855).

Almost surely, 2^{30131311320133} is an apocalyptic number.

It is an amenable number.

30131311320133 is a deficient number, since it is larger than the sum of its proper divisors (1882818949547).

30131311320133 is a wasteful number, since it uses less digits than its factorization.

30131311320133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199256.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 30131311320133 its reverse (33102311313103), we get a palindrome (63233622633236).

The spelling of 30131311320133 in words is "thirty trillion, one hundred thirty-one billion, three hundred eleven million, three hundred twenty thousand, one hundred thirty-three".