31320023001061 has 2 divisors, whose sum is σ = 31320023001062. Its totient is φ = 31320023001060.

The previous prime is 31320023001023. The next prime is 31320023001067. The reversal of 31320023001061 is 16010032002313.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20380764424036 + 10939258577025 = 4514506^2 + 3307455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31320023001061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31320023001067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15660011500530 + 15660011500531.

It is an arithmetic number, because the mean of its divisors is an integer number (15660011500531).

Almost surely, 2^{31320023001061} is an apocalyptic number.

It is an amenable number.

31320023001061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31320023001061 is an equidigital number, since it uses as much as digits as its factorization.

31320023001061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31320023001061 its reverse (16010032002313), we get a palindrome (47330055003374).

The spelling of 31320023001061 in words is "thirty-one trillion, three hundred twenty billion, twenty-three million, one thousand, sixty-one".