31223732068541 has 2 divisors, whose sum is σ = 31223732068542. Its totient is φ = 31223732068540.

The previous prime is 31223732068499. The next prime is 31223732068547. The reversal of 31223732068541 is 14586023732213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29955808776100 + 1267923292441 = 5473190^2 + 1126021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31223732068541 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31223732068547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15611866034270 + 15611866034271.

It is an arithmetic number, because the mean of its divisors is an integer number (15611866034271).

Almost surely, 2^{31223732068541} is an apocalyptic number.

It is an amenable number.

31223732068541 is a deficient number, since it is larger than the sum of its proper divisors (1).

31223732068541 is an equidigital number, since it uses as much as digits as its factorization.

31223732068541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1451520, while the sum is 47.

The spelling of 31223732068541 in words is "thirty-one trillion, two hundred twenty-three billion, seven hundred thirty-two million, sixty-eight thousand, five hundred forty-one".