30331140293 has 2 divisors, whose sum is σ = 30331140294. Its totient is φ = 30331140292.

The previous prime is 30331140271. The next prime is 30331140319. The reversal of 30331140293 is 39204113303.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27435947044 + 2895193249 = 165638^2 + 53807^2 .

It is a cyclic number.

It is not a de Polignac number, because 30331140293 - 2¹² = 30331136197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30331140233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165570146 + 15165570147.

It is an arithmetic number, because the mean of its divisors is an integer number (15165570147).

Almost surely, 2^30331140293 is an apocalyptic number.

It is an amenable number.

30331140293 is a deficient number, since it is larger than the sum of its proper divisors (1).

30331140293 is an equidigital number, since it uses as much as digits as its factorization.

30331140293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 29.

Adding to 30331140293 its reverse (39204113303), we get a palindrome (69535253596).

The spelling of 30331140293 in words is "thirty billion, three hundred thirty-one million, one hundred forty thousand, two hundred ninety-three".