3147428693 has 2 divisors, whose sum is σ = 3147428694. Its totient is φ = 3147428692.

The previous prime is 3147428639. The next prime is 3147428699. The reversal of 3147428693 is 3968247413.

Together with previous prime (3147428639) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1967987044 + 1179441649 = 44362^2 + 34343^2 .

It is a cyclic number.

It is not a de Polignac number, because 3147428693 - 2¹⁶ = 3147363157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3147428699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1573714346 + 1573714347.

It is an arithmetic number, because the mean of its divisors is an integer number (1573714347).

Almost surely, 2^3147428693 is an apocalyptic number.

It is an amenable number.

3147428693 is a deficient number, since it is larger than the sum of its proper divisors (1).

3147428693 is an equidigital number, since it uses as much as digits as its factorization.

3147428693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 47.

The square root of 3147428693 is about 56101.9491016132. The cubic root of 3147428693 is about 1465.4982355636.

The spelling of 3147428693 in words is "three billion, one hundred forty-seven million, four hundred twenty-eight thousand, six hundred ninety-three".