31482064121 has 2 divisors, whose sum is σ = 31482064122. Its totient is φ = 31482064120.

The previous prime is 31482064111. The next prime is 31482064123. The reversal of 31482064121 is 12146028413.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20803735225 + 10678328896 = 144235^2 + 103336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31482064121 is a prime.

It is a super-2 number, since 2×31482064121² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

Together with 31482064123, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (31482064123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15741032060 + 15741032061.

It is an arithmetic number, because the mean of its divisors is an integer number (15741032061).

Almost surely, 2^31482064121 is an apocalyptic number.

It is an amenable number.

31482064121 is a deficient number, since it is larger than the sum of its proper divisors (1).

31482064121 is an equidigital number, since it uses as much as digits as its factorization.

31482064121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 31482064121 in words is "thirty-one billion, four hundred eighty-two million, sixty-four thousand, one hundred twenty-one".