30611131253 has 2 divisors, whose sum is σ = 30611131254. Its totient is φ = 30611131252.

The previous prime is 30611131219. The next prime is 30611131297. The reversal of 30611131253 is 35213111603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29487071524 + 1124059729 = 171718^2 + 33527^2 .

It is a cyclic number.

It is not a de Polignac number, because 30611131253 - 2¹⁰ = 30611130229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30611131853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15305565626 + 15305565627.

It is an arithmetic number, because the mean of its divisors is an integer number (15305565627).

Almost surely, 2^30611131253 is an apocalyptic number.

It is an amenable number.

30611131253 is a deficient number, since it is larger than the sum of its proper divisors (1).

30611131253 is an equidigital number, since it uses as much as digits as its factorization.

30611131253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 26.

Adding to 30611131253 its reverse (35213111603), we get a palindrome (65824242856).

The spelling of 30611131253 in words is "thirty billion, six hundred eleven million, one hundred thirty-one thousand, two hundred fifty-three".