31028125061 has 2 divisors, whose sum is σ = 31028125062. Its totient is φ = 31028125060.

The previous prime is 31028125043. The next prime is 31028125067. The reversal of 31028125061 is 16052182013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26197041025 + 4831084036 = 161855^2 + 69506^2 .

It is a cyclic number.

It is not a de Polignac number, because 31028125061 - 2⁶ = 31028124997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (31028125067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15514062530 + 15514062531.

It is an arithmetic number, because the mean of its divisors is an integer number (15514062531).

Almost surely, 2^31028125061 is an apocalyptic number.

It is an amenable number.

31028125061 is a deficient number, since it is larger than the sum of its proper divisors (1).

31028125061 is an equidigital number, since it uses as much as digits as its factorization.

31028125061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 29.

The spelling of 31028125061 in words is "thirty-one billion, twenty-eight million, one hundred twenty-five thousand, sixty-one".