31232130133 has 2 divisors, whose sum is σ = 31232130134. Its totient is φ = 31232130132.

The previous prime is 31232130107. The next prime is 31232130197. The reversal of 31232130133 is 33103123213.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17009898084 + 14222232049 = 130422^2 + 119257^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31232130133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31232130833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15616065066 + 15616065067.

It is an arithmetic number, because the mean of its divisors is an integer number (15616065067).

Almost surely, 2^31232130133 is an apocalyptic number.

It is an amenable number.

31232130133 is a deficient number, since it is larger than the sum of its proper divisors (1).

31232130133 is an equidigital number, since it uses as much as digits as its factorization.

31232130133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 31232130133 its reverse (33103123213), we get a palindrome (64335253346).

The spelling of 31232130133 in words is "thirty-one billion, two hundred thirty-two million, one hundred thirty thousand, one hundred thirty-three".