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97030471 = 874711093
BaseRepresentation
bin1011100100010…
…01000101000111
320202120122210011
411302021011013
5144314433341
613343411051
72255513446
oct562110507
9222518704
1097030471
114a85347a
12285b3a87
1317143ca5
14cc5ad5d
1587b9b81
hex5c89147

97030471 has 4 divisors (see below), whose sum is σ = 97050312. Its totient is φ = 97010632.

The previous prime is 97030457. The next prime is 97030487. The reversal of 97030471 is 17403079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17403079 = 27762827.

It is a cyclic number.

It is not a de Polignac number, because 97030471 - 213 = 97022279 is a prime.

It is a super-3 number, since 3×970304713 (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97030411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3201 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (24262578).

Almost surely, 297030471 is an apocalyptic number.

97030471 is a deficient number, since it is larger than the sum of its proper divisors (19841).

97030471 is a wasteful number, since it uses less digits than its factorization.

97030471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19840.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 97030471 is about 9850.4046109792. The cubic root of 97030471 is about 459.5181959126.

The spelling of 97030471 in words is "ninety-seven million, thirty thousand, four hundred seventy-one".

Divisors: 1 8747 11093 97030471