147031693 has 2 divisors, whose sum is σ = 147031694. Its totient is φ = 147031692.

The previous prime is 147031639. The next prime is 147031739. The reversal of 147031693 is 396130741.

Together with previous prime (147031639) 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., 134050084 + 12981609 = 11578^2 + 3603^2 .

It is a cyclic number.

It is not a de Polignac number, because 147031693 - 2²¹ = 144934541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147031603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73515846 + 73515847.

It is an arithmetic number, because the mean of its divisors is an integer number (73515847).

Almost surely, 2^147031693 is an apocalyptic number.

It is an amenable number.

147031693 is a deficient number, since it is larger than the sum of its proper divisors (1).

147031693 is an equidigital number, since it uses as much as digits as its factorization.

147031693 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 147031693 is about 12125.6625798346. The cubic root of 147031693 is about 527.8011344082.

The spelling of 147031693 in words is "one hundred forty-seven million, thirty-one thousand, six hundred ninety-three".